depends sort of which route you want to go, purely primitive, or glass laminated trad bows or somewhere in the middle with backed bows- its all personal, and doesnt really matter which, as long as you are buildin' !!!
i started with board bows,( small investment- money wise) then moved to staves and laminated bows etc. my learning curve was a slow one, as i had no one to help me, except all the amazing help on this forum, when i finally sumbled upon it- of all the forums i follow this is the greatest- everyone is so helpful and courteous , this forum was my greatest help.
i have only heard good things about the bingham stuff- other guys on this forum also supply, check them out, also have good reps.
the bowyers bibles are excellent.
get someone to physically help your brother.
if it is at all possible. it makes all the difference. i have helped a few people now, and at least their first bows were all good shooters, and they didnt learn too many bad habits in the process. and they all built hickory backed ipe longbows as a first project, which under normal circumstances would be quite an undertaking, but with a little help all went well.now they are well on their way.
good luck
wayne