There are masses of resources on the web in connection with David Allen’s Getting Things Done book. Here are some of the best:
52 reviews has the best list of resources
http://52reviews.com/2006/07/09/getting-things-done/
43 folders has some interesting stuff on the GTD approach
http://www.43folders.com/category/gtd/
If you want to take the first step from being a Hardworker to being a Smartworker GTD is a great place to start. Ok It’s basically a book about self-organisation but it takes a really down to earth approach.
We are currently developing a couple of GTD tools ourselves – can’t wait to share them soon.