Computer science learning portal
Most of us in these days try to find stuffs like this to learn understand and use it in easy way and what this is excellent platform really known as w3 schools and believe me and there is lots of practical question there which help you to build concept. This is easy to use and many others things also like xp which treated as to rate your performance of learning . There is feature of comment to make it more enable for the users and open to analysis for any doubt in it. But starting to this you must need some basics so that you implement it in cool way.