On my personal blog, I reviewed the book Getting Things Done. Many of you are interested in working and doing your job as best you possibly can. I thought you might be interested in David Allen's book.
Click here to read the review of Getting Things Done.
After starting the system, you may want a simple way to do it. I don't own a PDA, so I am just using a notebook right now. However, 43 Folders provides a "Hipster PDA" plan that I may begin using.