W3Schools is best website for IT or Computer Engineering student to learn programming languages.On this web site we learn different languages for e.g(HTML, CSS, JSCRIPT, SQL).This website give us brief information of that language which we want to study.It support both PC and Mobile device.We can also install android app in our mobile witch we can use without internet.
W3School website doesn’t take to much time to load.So I think this is best web to study a programming languages.