The best way to get him "ready" is get him a legal weight bow that fits him and a 3d target of his target species, then practice, practice practice. Once he is very proficient in accuracy, the easy part is done. If you are new to hunting, best to find a buddy to take you and help you with the learning curve. If you have hunted a lot, then this will be a great bonding experience for you and your son. Start hunting out of a ground blind as being elevated in a lock on adds all kinds of new risks and things to learn. Regardless of where you hunt, make sure safety is paramount.