Greetings,
1) It's a Fukien Tea.
2) You can find some care info over at
BCI Species Index *the species name will be listed as
Carmona microphylla or Ehretia microphylla
3) There are some book suggestions in the ***books*** folder. *Many people began with the SUNSET bonsai book and it offers a good overview.
4) Since you didn't tell us what the store told you or what the info you found on the internet was, all I can do is nod and say "I see."
Believe it or not, the Ask Dr. Bonsai robot on the home page knew the answers to all these questions, except for #4, which I don't even understand completely. You might give him a try in the future.
Regards,
Matt