I certainly understood to start out slow. If I were starting out, my Auto Starer Kit would be my choice. This and a ring stretcher/reducer machine would be the main tools. Durston makes the best stretcher/reducer but is pricey and worth it at around $400
There are ways to start for less too though. There are less quality stretchers available on Amazon. My manual also talks about simpler methods without as much tooling. I suggest reading that a few times and see what you think.