Get started on wikipedia and gain some experience doing small edits and learning the ropes. Time enough for big ambitious edits later.
I guess I might still try to rewrite the Obsidian Chronicles articles, but that still might be too ambitious for me, because in their current state, they are going to need alot of work, and im not all that fluent on the wiki programming language and formatting syntax etc. etc.
ProveIt is a user script (and gadget) that makes it easy to find, edit, add, and cite references in Wikipedia articles.
It provides a graphical interface for editing, adding, and citing references. The ProveIt toolbar displays at the bottom of the Wikipedia text editor (for articles only).