Best website to learn math from the beginning? (exept khan academy)

I suppose Math is fun is a good website and second best resource besides Khan Academy (second to your school material) to learn math from the beginning.

If you are talking about 6 grade and up I recommend you virtual nerd.  I also recommend you study.com 
Also,  I recommend textbooks in case they some websites cost money, you could get textbooks from your local library.   I actually do strongly recommend you to use khan academy since it teaches people a lot of valuable stuff and basically is a none profit group.  Finally, the strongest website to learn math is in youtube since I doubt that you will not find one single video about something you want to learn.

Definitely