Soom includes three lengths of elastic in the kit--the shortest length is for the arms, the medium length is to be folded in half and used to hold the head on, and the longest piece goes around through the legs. The only place where you might want hooks (and Soom doesn't send any) is for the hands. Or you can untie the shortest piece of elastic and loop it over the posts in the hand pieces. I made my own hooks.
The arms are already sort of put together. I found it easier to pull off the shoulder piece to string the arms.
Now for the head stringing:
Now the legs:
For some reason I didn't do any pictures of putting the feet on, but the earlier post Super Gem Stringing Guide shows that. Here's Antoine all strung, if bald: