RE: I could really use some arrow help!
This is a good place to learn those things, and to meet folks who know their stuff.
I would start by reading the easton Tuning Guide. It gives a good overview for starters.
That will spark specific questions that you can get answered here.
I feel the best way is to join an archery club or talk with members of one you already belong to. It's much easier to discuss it all in person, and there is way too much to learn in one discussion. The gain in knowledge and understandingneeds to be more of a gradual evolution rather than a one time "dump" of info.