One has to have some consistency before we can see the actual point of impact differences among different arrows. I think near the beginning of consciously working on improvement, arrows are not as important as other things, things which create the foundations of consistency over the long run. A good finger glove, that's needed.
For example, the "cant" of the bow. Cant is the lean of the bow away from the arrow so the arrow sort of rests in the rest in a little V. Nearer the beginning of improving, we cant our bows more. We think we're balancing the arrow in that V, but really we haven't noticed that it's our holding fingers that control how the arrow rests. Learning that requires learning how to separate neural instructions to each finger separately while holding at full draw.
So, time has to pass as our neural pathways develop themselves in response to the stimulus of our request to the fingers.
To me, beginning to learn how to improve flooded my brain with excessive data. That's when I began to separate things into manageable chunks. For example, I spent a year aligning my drawing elbow with my drawing fingers with the arrow rest with the point of aim.
After all this fooling around with learning how to learn and then applying that to shooting, I find it all works when I let it flow. I have to mess up a few shots first somehow. But at a certain moment I engage the flow. Of course one loses oneself there, so it takes tremendous concentration to remain lost--not as easy as it appears!
It's so easy to drop back into my body and notice something, like which eye I'm sighting with with them both open--then I miss the exact point of aim, sometimes by several inches. I admonish myself then shoot more.
A good shooting glove, a predictable bow, and sufficient arrows is about all you'll need until you start breaking nocks. Then you'll start to pick up those tools that will allow you to repair, then construct, arrows. I have a pile of dead arrows under my bench that I cannibalize for spare parts. I have a little tool box now for my archery tools, and in there are the few broadheads I've picked up.
I really don't have more than a couple hundred bucks into archery all told. Oh, guns. That's where my problem lies. "There's a hole in daddy's safe where the money goes..."
CDFingers