Hi
Yeah grind the bone to powder, you don't need much, probably a large pinch to small lump of resin glue, or until you feel it's right for you. There's only a few rules in primitive, and mostly we learn like our ancestors did, trial and error.
Collecting it. In England early Autumn, about this time of year, I think you call it fall, there is usually some still running but mostly solidified, and that's when I collect most. It comes from natural lesions or tears in the bark and you will see its trail usually white or brownish running down, sometimes, handily for us, even coagulating in holes.
Not all trees have it so you have forage and gather where you find it. Last weekend in a copse of about 80 spruce I found 4 bleeders and collecting a handful in about 10 minutes ( careful it sticks to your knives and fingers and it's a bitch to wash off). You can collect it all year, because if nobody has taken it it will still be there in spring usually whiteish and hard, or sometimes it can look just like bark in colour and texture. It smells great and I get as much pleasure digging it out of holes in trees as I do working with. Get small pleasures from where you can. You can even, without hurting the tree, cut the bark in spring and wait for about 6 month. I don't, and really there should be enough damaged trees around without needing to. Happy collecting