Rorryy pretty much covered it.
Patience is the key, especially if this is your first. I've had mine for 5 days and I began to hold him inside the tank on the second day for a few minutes, and of course he was terrified. I fed him on the third, and late in the fourth day I began to handle him outside the tank for about 5 minutes. Also sometimes I'll stick my hand in so he can smell my scent, just to get it through to him that I'm no threat. But yes, almost everyone would recommend giving it time, 1-2 or more days before gently handling it.