Bonsai is a complicated and complex art form. Finding solid information and getting your questions answered by reputable sources can often be challenging especially in the US. Because of this I'd like to strongly encourage anyone that loves Bonsai to take advantage of the "Michael Hagedorn-Ask Me Anything thread" that just popped up here:
In my opinion, Michael Hagedorn is one of the best in the US and he'll answer any question you might want to know. You don't have to travel anywhere, you'll likely learn some new and it costs you nothing! Check it out!!!