This website is the best so far to me when it comes to selfhelp and self learning.
I have enrolled myself for many courses in udemy and let me tell you one thing that quality of conten as well as the quality of their website is great.
On top of that there are also lots of free courses that available that you can enroll for which I think is great.
There are lot of categories that you can choose from to learn , from online marketing , web development , tax, business tools etc.
Anybody who is a looking to get real world learning experience should definatly opt for udemy.