Most start with the Easton tuning guide. Its usually free and very informative.

What I suggest is tinkering. Get a paper setup, get a bareshaft setup. Move your nocking point up and down and see the effects. See the effects of clearance issues. Move your rest left and right to extremes and see the effects. Shoot heavily spined arrows, shoot weak spined arrows. Shoot just right arrows. Add wieght to your points, take away weight. Each time noting the tear, or arrow reaction if bare shaft. Put some Bh's on and play with that.

One thing I did was take an old PSE I had and decided to take the bow down all the way. I changed the strings out, greased the axles, retuned. I learned a lot on that bow.

Another thing I did was volunteer at a shop to do some work. For free. Bad news is most of the work is prime hunting time. But experience here cannot be bought.