We work with three main electronic bookstores that run their own affiliate programs. Join at their site, they all have different requirements and terms:
For maximum rewards you should use Smashwords. We have set-up the commission fee to be 80% (Smashwords is the only retailer that gives us that option).
Most titles will be found in all three retailers, some new titles may only be found on Kindle Select for a few months.
We are constantly enriching each title with memes, high-res media and other graphics. Feel free to request them at firstname.lastname@example.org
(a dropbox folder will be available soon with creatives)