Hey Jared,
Bummer about the accident and getting so busted up.
One of the things I love about knife making is how incredibly diversified you can be as a craftsman and how much there is to learn and do!

I'd probably be reading about machining, because it's a field I know nothing about. You've got that one covered though. I'm reading a book right now, that I'm thoroughly enjoying, entitled
Woodworker's Guide to Wood.There are a gazzillion other related subjects out there too: leather working, photography, graphic design, engraving, carving, foundry and lost wax casting, iron oar, meteorites and metallurgy, business development, accounting, etc, etc...
All the best with a speedy and full healing, Phil