Here’s a general repository of articles and blogs I’ve found through my travels in this wide, wide net:
The Four Paragraphs that Make a Killer Cover Letter — This is my very favorite how-to for cover letters. It makes writing them very easy, and the final product is simple but powerful (and, if done right, doesn’t sound like a form!).
How to Pick a Career (That Actually Fits You) — This novella-length article is FANTASTIC, and what I hope this blog will be. It’s dense, but it’s an invaluably in-depth look at what goes into picking a career, and what many don’t think about when doing so.