The maths articles on Wikiepedia are -- in my experience -- useless at teaching people maths stuff.
Reading any article on math and expecting to understand the ideas is like reading a description of a language syntax and expecting to gain a feel for it. That simply doesn't work. Python, Lisp, OCaml, Haskell, they all require that you write something serious before you start to grok the language fully. The syntax is trivial, and the gains from understanding only that, likewise.
All articles on math need to be studied, not read. You need to work exercise, solve problems, use the material.
Otherwise all you have is a description, not understanding.
You can't read math like a novel.
See Buffy, Star Wars, http://en.wikipedia.org/wiki/Thom_Merrilin etc
Feel free to post it if you want. Probably good for a good chunk of karma if it hasn't gone up yet.
http://www.research.att.com/~njas/sequences/A114574 -- a good one :)