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Computer Science

Learn to code for free, selecting only the programming languages that you need, based on what you want to develop. Massive use of open-source libraries and code snippets will save you time, and speed the learning curve.

Website Design

Offer your visitors a single purpose, whether to sell something, to educate or to entertain. The second goal is to guide the user through that experience. Therefore, skip the flash introduction, avoid blinking buttons, and cut out the clutter of words. Good website design is the same thing as good page design, like you see in a magazine. Basically, page layout can be restricted to a header, a two or three-column main body, and a footer. Menu choices should highlight your main offerings, and make it easy for your viewers to find the rest of your site.

As the field of website design expands, developers have become responsible for many areas, including writing content, graphics, template layout, and online marketing. In addition, web developers may handle technical, back-end problems for the site.

Some of the design skills for making websites do not change much over time, but other critical areas, including market research, search engine optimization, and conversion optimization, are constantly shifting as new tools become available. Browse the following split-screen example pages from w3schools.com, where you can see changes that you make to your page in real time. Following each example set, try taking the 20-question quiz on the same subject. When you've finished reviewing your results, browse the reference pages, and save all links as a resource, for when you are making your own site.

Success is governed by two main factors, visitor traffic and sales conversions. How many of the right people can you attract to your site, and how many of those people can you persuade to take the action that you want them to take? Not only can you practice making your own websites to earn money, but if you focus your talents, you can find part-time employment designing websites for small businesses and individuals. A good portfolio often is the deciding factor in getting a job. Students interested in graphic design programs should take basic courses in studio art, computerized design, commercial graphics, or website design.

HTML, HTML5
HTML Test
HTML5 Test
Bootstrap Test
HTML5 Introduction
HTML Examples
HTML tutorial HTML Reference


CSS Style Sheets
CSS Test
CSS Examples
CSS Tutorial, CSS3
CSS Reference


JavaScript Tutorial
JavaScript Test
jQuery Test
JavaScript Examples
JavaScript
JavaScript Tutorial

php programming
PHP Test
php Tutorial
php Reference
XML Test
AJAX Examples


ASP.NET programming
ASP Test
ASP.NET Examples
ASP.NET Reference
ASP.NET Tutorial


SQL database calls
SQL Test
SQL Tutorial

Swift Tutorial


Learn how to code with Swift in this full tutorial course. Swift is a powerful and intuitive programming language for macOS, iOS, watchOS and tvOS.

Learn Java


Learn Java 8 and object oriented programming with this complete Java Tutorial.

Python Django Framework


Django is an extremely popular and fully featured server-side web framework, written in Python. Django allows you to quickly create web apps.

C++ Tutorial


C++ is a general purpose, case-sensitive, free-form language that supports object-oriented programming.

Android, iOS Apps

Android Design Style, building blocks, downloads, and video.

Android Development Training, API Guides, a quick reference, and samples.

Google Play Google Play is an easy way to distribute your Android Apps. Register, upload, and publish your app, so Android users can rate and add comments.

Google Apps Marketplace Google Apps already has 40 million users and an additional 5,000 companies a day are signing up.

Chrome Web Store The Chrome Web Store lets you publish apps and games for 200+ million Google Chrome users.

Web In-App Payments Use Google In-App Payments to sell digital and virtual goods within a web application.

Google Play In-App Billing Google Play In-App Billing allows you to sell digital content, including downloadable content such as media files or photos, and virtual content such as game levels or access.

Modern programming is becoming less about knowing how to program, and more about sourcing code snippets, and accessing software libraries. Google recently opened their Google Apps and API's to developers.

Domain Name Registration and Renewals

By December 2009, there were 192 million domain names registered. A large fraction of them are in the .com TLD, which as of March 15, 2010, had seen 84 million domain names in use, including 11.9 million online business and e-commerce sites, 4.3 million entertainment sites, 3.1 million finance related sites, and 1.8 million sports sites.

Domain Names
Website Hosting
Free Blog

The right to use a domain name is delegated by domain name registrars. In addition to ICANN, each top-level domain (TLD) is maintained and serviced technically by an administrative organization operating a registry. The domain registry is responsible for maintaining the database of names registered within the TLD it administers. The registry receives registration information from each domain name registrar authorized to assign names in the corresponding TLD and publishes the information via the 'whois' protocol. Registrars charge a yearly fee for the service of delegating a domain name to a user and providing a default set of name servers. GoDaddy is a popular discount registrar, charging about $10/year to register a domain name. For hosting, you can try BlueHost, which we have had good luck with over the past year.

Cloud Hosting

Google hosting, with a learning curve at first but then reasonably-priced, scalable stable hosting. likely better uptime, loading speed worldwide, and resources.

Google Cloud Hosting Prices

Google Cloud Hosting

Google Cloud Hosting Trial

Color and Images

There are many publishing and blogging platforms around today, like Word Press, which mean that almost anyone can publish online within minutes. Website design is a new field, and it's constantly changing as cloud programming and open source enables new design software.

Live Color Palette
Stock Photography
GIF Animation

- iStockPhoto
- Flickr Creative Commons
- Digital Photography
- Sell Stock Photography
- Sell Stock Photos
- iStockPhoto Affiliate Program

For layout, just use one of the many free template sites found via a Google search. A live color wheel and color lab can be found at Visibone.com, and graphics work can be done on the Free Photoshop Trial offered by Adobe. Learn more from the Photoshop Tutor.

Cryptography

Identification and authentication techniques sometimes use biometric information to add further confidence that users are legitimate when attempting physical or logical access to system resources. Single sign-on and associated technologies and protocols aim to reduce the proliferation of IDs and passwords to better control the security of access control mechanisms both within and outside the organization. Industry alliances, such as the Liberty Alliance, are moving toward federated identities that permit single sign-on or reduced sign-on for e-commerce users.

Cryptography relies on two basic methods: transposition and substitution. With transposition, ciphertext is created by scrambling a message based on a shared secret key. In substitution, letters are exchanged with other letters based on a substitution pattern known by both the sender and receiver. The strength of a cryptosystem rests in the size and means used to protect cryptographic keys; in general, the longer the key, the harder it is to break the encryption. The same key can be used to both encrypt and decrypt information and is called a symmetric key, or different keys can be used for encryption and decryption and are called asymmetric keys.

Digital signatures are used in asymmetric key cryptography to protect a message’s content from disclosure, prove the integrity of a message upon receipt, and verify that the sender of the message is indeed who he or she claims to be. Digital signature technology relies on a Public Key Infrastructure for implementation and is at the heart of many commercial products that are used in modern electronic commerce.

Virtual private networks (VPN)

Virtual private networks (VPN) are secure connections over the Internet that enable remote users and sites to connect to a central network. You can use PPTP, L2TP, or IPSec to create a VPN. IPSec is considered the most secure of the three. Administrators creating a VPN protocol should consider how the packets are encrypted, what sort of authentication is used, and whether the current hardware and software supports that technology. The protocols used by many common attacks are ICMP, UDP, and TCP. IP address spoofing is a serious threat, and although there are various techniques for avoidance, including reverse path forwarding, route filtering, and reverse DNS look-up exist, none are foolproof by themselves. Used in combination with other firewall methods, such as ignoring ICMP echo requests sent to broadcast addresses, it may reduce the impact of DoS attacks in which IP address spoofing is prevalent.

Each category of firewall has its own unique set of features and functionality, and you must perform a careful analysis to determine which firewall is needed in your environment. Personal firewalls are needed even in an environment where an enterprise firewall is installed, since they protect a computer from internal attacks. One economical personal firewall is available on any Windows XP system. It provides incoming protection and should be used if no other firewall will be installed on the host computer. Other personal firewalls, such as Zone Alarm, provide enhanced functionality that goes beyond the capabilities of the Windows Firewall.

Computer Programmer Jobs

The median annual wage for computer programmers was $108,530 in May 2021. Employment of software developers is projected to grow 15 percent from 2021 to 2025, much faster than average. Software developers also need skills related to the industry in which they work. Developers working in a bank, for example, should have knowledge of finance so that they can understand a bank's computing needs. In fact, many students gain experience in software development by completing an internship at a software company while in college.


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Junior Software Engineer
National Association of Boards of Pharmacy
_This is an exempt position and may be remote._. The Junior Senior Software Engineer is a talented, self-motivated individual, who can join NABP to help build…
3 days ago
Junior Programmer
Glyph Software
Full Time or Remote/Contract. Glyph is seeking an exceptional self-starter who can deliver quality code to specification and project milestones.
18 months ago
Junior Front End Engineer
National Kidney Foundation
This position works closely with product managers, designers, site admins, and our marketing team to translate ideas into compelling, informative, and valuable…
3 days ago
Jr. Software Engineer
John Deere
At John Deere, we run so life can leap forward. This powerful purpose is our promise to humankind that we will dream, design and deliver breakthrough products…
3 days ago
Web Developer
Filmed by frazier
Web developers* design and build websites. They are typically responsible for the appearance, of the site and technical aspects, such as site speed and how much…
30+ days ago
Software Engineer I
Indeed
If you are an engineer who's passionate about building impactful products that scale to tens of millions of page views a day, Indeed is looking for you.
2 days ago
Game Server Programmer
Epic Games
As part of the server team, you will be innovating and pushing the limits of what’s possible in multiplayer gaming while delivering the best experience possible…
3 days ago
Software Engineer Early In Career (US Remote)
Splunk
Join us as we pursue our disruptive new vision to make machine data accessible, usable and valuable to everyone. Able to learn new technologies quickly.
1 day ago
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