We recently videoed a full
PDC and
appropriate technology course. People can now watch the full
PDC for $125. If you make an
affiliate link and pass it around, you would get $50 for each sale. If you have a blog and you post it to your blog, that link might bring in hundreds of dollars per year and you don't have to do anything more.
Here is a list of the stuff I currently offer with a 40% affiliate fee:
https://permies.com/f/312/paul-wheaton
Here is the info on how to upgrade your permies.com account to be an affiliate account:
https://permies.com/t/64031
Here is a whole bunch of stuff in our digital market - most of which has a 40% affiliate fee:
https://permies.com/c/digital-market