You might want to start by exploring the
developer support forums since there's really a lot more developers hanging out there and available to help than there are here. The traffic is lighter in most cases, but that's because there's less idle chatter, gossip-mongering, and trolling, among other things (in spite of the admirable efforts of people here to clean things up).
I wouldn't suggest ignoring either venue, however, which is why I hang out here.
If you've got lots of experience using C/C++ you should consider the NDK rather than the AIR stuff, though if you think you'd be comfortable with ActionScript3 (much like Javascript with static typing) it's a pretty good environment. As usual, the learning for an experienced dev is mostly in the libraries and tools, not the language.
The problem for now with the NDK is that it's lacking any UI framework, though efforts to port Qt are underway (and largely successful, as far as I know). For now, the NDK has to focus on games or other apps where they can supply the entire UI themselves. The Cascades UI framework is close to entering beta (closed at first, then open, same as NDK had) but not quite there yet. Probably in early January.
If you like Python, you'd be well advised to get familiar with "BBX Python" (name subject to change, for obvious reasons):
BBX-Python Read that and all my past posts on the topic (linked from that page). It's not ready for prime time, but mostly it's waiting on the release of the Cascades UI framework stuff, which is the same holdup I just mentioned for the NDK.
There's also the #playbook-dev IRC channel on Freenode. And #bbx-python there as well, though much less active for now.