https://insidemyshop.com/ This video is an intro only to types of bits. I have started playing around with rock carving. The type of rock carving using Dremel tools and Dremel bits. I tried using the silicon carbide and aluminum oxide bits and realized if I was going to enjoy this hobby I needed diamond bits to do it right.
The diamond bits I use are mostly from H/F but a few I have purchased from other various sources.
If you want to give rock carving a try start w/an assortment of diamond bits from H/F for around 15 bucks.