Maybe spruce up the website a little… darn it’s plain jane…
When I look at learning from a web developer, especially front end stuff, I want to see his expertise in action on his own website… Maybe it’s different in the Rails world, but I think Jeffrey Way makes a good living because of his well crafter site and his involvement in Laravel core development …
So I think you are off to a great start and obviously people see value in your material because if you sell books with that website, I can’t imagine what it would be with a sexy front end…
Just curious, I am going to hypothesize (is that even a word…) here… are your customers typically an older Rails programmer that likes the no frills approach to your to the point info? What about would be aspiring web developers that want to learn rails and angular… are they attracted to your product as well? I would think they would need a more inviting presentation… but I could be wrong…
One thing for sure is like you say… there are many things you can do and I don’t think you have but scratched the surface of this…