W3Schools

W3Schools is a web developer information website that created and owned by Refsnes Data, a Norweign family owned software development and consulting Company and launched in 1999. If you are a Computer Science student or a Computer Science teacher this website will very useful to your work.

From this website you can get a wide knowledge about HTML, CSS, JavaScript, SQL, PHP and JQuery with tutorials and references. It doesn't matter whether you are a beginner or an intermediair or an expert. This is like a course but the difference is you don't want to pay fees, no course duration, you can visit in anytime and from anywhere and no need to sign in.

This site provides a reference manual covering many aspects of web programming, including technologies such as HTML, XHTML, CSS, XML, JavaScript, PHP, ASP, SQL etc. W3Schools presents thousands of code examples. By using the online editor provided, readers can edit the examples and execute the code experimentally.  

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