They are one of the more personable species that I have owned. LOVE kings. They are pretty easy keepers and generally have good dispositions which would make me recommend them as a beginner species. Babies tend to be a bit nippy, but they usually grow out of that. They are usually voracious feeders. Meal time is never a problem.
I would suggest looking into king care sheets before purchase of one. There are a couple different methods of keeping them (ambient temps, heat lamp, uth, heat tape) and you need to pick one that works best for you and your animal.