Seth Godin has several good marketing books like the Purple Cow, etc. Check them out at the library thought instead of buying them
Hi You know, marketing is a wide subject - you have books from the traditional marketers like Kotler to online marketers (which are many) Are you searching for somethin specific ie., affiliate marketing, network marketing, internet marketing I have a few affiliate guides listed here.. if you want check them out http://www.marketingaffiliater.com/affiliate-guides/ There is also a free download section Wish you the best