ElGringo

Sometimes in those DIY shops, you can buy actual bonsai, but often they are mass produced, root bound, and probably already dying when you buy them (some people on this forum call them 'mallsai'). A proper plant nursery and other bonsai hobbyists may be the best source of bonsai. They can give you advice too.

It will help if you read as much as you can, but remember that in the end growing bonsai depends a lot on trial and error (or so I have found).

So good luck and bonsai power!

Gringo ^_^