Writing A Book On UnEmployment

I have a really cool book that I'm writing on unemployment.  Okay, when I say writing, I mean I have the outline and four chapters and I know what the rest of the book is supposed to say, but I haven't taken the time to write the rest of it.

Sad, I know.  Especially when I'm clearly not suffering from writers' block - but the question is how I put the book out.  Online?  Self-published?  Send off a manuscript?

It's got a great title, a good story, relevant information, and my social network, is well, it's not small.  I'll try to post up small bits here and there on the different recruiting blogs - but if anyone has suggestions on the publishing - please let me know.