[bracobama]

For a long time I've had this idea about creating a website where this type of idea is expressed. I envision it to be some large hierarchical tree like structure (not unlike the ones you see in games like FInal Fantasy) where you pick a topic you want to learn and it gives you the basics to learn and then once mastered allows you to goes deeper by diverging into specialised categories.

[jerf]

I've prototyped this mentally too. If I were going to do it, I think I'd write myself a modification to a Wiki engine that can detect when links only go to simpler things, and highlight those. (You don't want to "ban" links going up to harder things, but you may want to isolate them in a dedicated section or something.)

You might be able to bootstrap off of wikipedia content.

The thought that provoked this in my own head was the observation that Wikipedia is virtually useless for learning anything mathematical because so many of the links on any given article head "up", rather than "down", and a casual user can't figure out which is which.

[nitrogen]

Sounds great! Something I found lacking in school was that nobody could take "I want to do X" and turn it into "You should learn A, B, D, and R", nor the reverse.

[beaconstudios]

then you should work on that website a little every day, while researching how to make it even better :)