Quit Your Day Job is offering a free eBook, High Performance Affiliate Marketing.
This isn't one of those little 10 page free ebooks that are little more than sales brochures. This is 146 pages of useful information for a beginning affiliate marketer. This is a quality effort and you can't beat the price.
The process to download the eBook is counter-intuitve. You have to register your email address, then you have to create a separate account. Then they email you the download URL.
If you intend to make money with affiliate marketing, you should download this eBook.