Looking for best Affiliate Guide

Ok, part of my '09 goals is to become wll versed in affiliate marketing. This is the one area of IM that I have blown off over the years, but probably the most interesting to me. In the past it has not fit into my business model, so I have ignored it.

My current business(s) are pretty much self sufficient or I have staff to help run it(at least my offline biz anyway).

So, what I am looking for is a product or guide that people feel is the best and most in depth in regards to affiliate marketing. I plan on researching and testing of course, but I also know that the right product can shave time and help in many ways. I am looking for something that deals not exclusively with info products, but would inlcude Physical products, CPA,CPC,PPC etc, the whole gamut.

I know there is no magic product or system and it is what I make of it, how much effort I put in, and how it fit's in with my own skills. I just am completely ignorant in regards to what would be a good starting point as far as products go. I self admittedly ignorant in this arena, so any input or opinions would be most welcome.

I won't hold anyone to it, I am just trying to get a head start. Please don't turn this into a pimp-fest trying to sell me YOUR product. If your product is that damn good someone else will recommend it.

Thanks in advance,
keith