If you have built up an email list, you could also promote your affiliate offers via email promotions. Just make sure you build up a relationship with your audience first instead of going for the hard sell straightaway. The emails you send out must contain your affiliate links to products so when your audience click through. the sale is attributed to you.
While I think that your initial response to Phillip’s suggestion about design was a little too strong, Dasjung, I’ve got to chime in here and observe that Phil, ThunderCock and Dumbass, by resorting to name calling and simplistic reasoning, come across as very lacking in both decorum and sensitivity. If a guy wants to expect, even demand, high quality in his field of choice, I beleive he has a right, if not a responsibility, to do so! Also, Dumbass, be careful who you call Dumbass. You just show YOUR true colors by doing so.
Hunt for under-priced used books that you can sell online. Download an app that reads ISBN numbers so you can scan the barcodes on books. This will pull up the book’s current price on Amazon so you can see if it’s worth trying to resell it. Then, visit used book stores, thrift stores, and garage sales to look for high value books. Post the books for sale online using sites like Amazon or Ebay.