Mike Ash has a great post about getting answers to your technical
This guide will walk you through ten basic things you can do to increase the
chances of getting answers, and increase the quality of the answers you get.
Getting a reply of rtfm! is considered failure, no better than no reply at
all, and getting advice that solves your problem is success. All else is
secondary to that.
If you’re at WWDC, then you need to take advantage of the labs. Your lab time
will be more productive if you prepare your questions before hand. This article
is a great checklist.