While most of the e-books out there are based on outdated information and some just instruct you to make an eBook and sell it online others are a good source of information.
I agree the only way you are going to make it in affiliate marketing is to work very hard and work twice as hard and 3X as smart as someone in an office.
Sure you work can work in your PJs but you may find yourself working 24 hours a day 7 days a week. But the possibilities are unbelievable.
I produced an eBook myself and converted it into a audio book and paid a lot money to do so - I know for sure and have been told that the information in this eBook is very valuable. The key is I don't pretend to sell "a system" or a "turn-key" millionaire solution - and I think these books are some of the worst.
So I would seek out books written by trusted personalities that are called "Primer" or "handbook" and do not mention "system" or "turn-key".
-Luke
