Well, I've never heard of "breaking" in a bow, so I can't help you there.

However, to sight it in is pretty easy. Make sure you can shoot relatively consistently at 20 yards. Then get at 20 yards and aim at your target (center would probably be best so you don't miss and lose an arrow) and fire at least 4-6 shots each time aiming for the exact same spot. Then go up and see where you arrows are going. Hopefully all or most of your arrows will be in the same general area [:P] If your arrows are to the left of what you aimed at, move your sight to the left a little bit, and vice versa if they are too the right. If you are shooting high, move your sight pin up, and if you are shooting low, move your sight pin down.

After doing this go back and shoot another set or two noting where you arrows are now going...just keep this up until you are shooting exactly where your are wanting at 20 yards. Then repeat same procedure for 30 yards, etc.

This is how I do it, there might be better ways, but I dont' know of any