StackOverflow's picky about this, but I'm not sure about game dev. Basically I'd like to ask a series of questions related to basic rendering ... e.g., "Android: What's the best way to draw a static background and place a few game pieces with out threading, then have a thread kick off when user touches a piece?" Of course, I'd search thoroughly first and usually include my findings as links in the question. My questions should be of use to others doing related methods.
Can I ask an algorithm question on the game main site
Yes. Algo questions are awesome. I want to see more of them
Can I ask "What's the best way to draw a static background and place a few game pieces with out threading, then have a thread kick off when user touches a piece?"
No. This is a really broad question that would be tutorial-length in scope. It would belong on a tutorial wiki or on a blog. More focussed questions on individual topics such as "How to I spin off threads in Android" or "How do I find game objects based on a touch event" would be the level of detail best suited for stackexchange.
Questions which don't involve code are fine.
You may need to be a bit careful to avoid your questions getting flagged as "what technology to use" or "how to get started" questions which aren't on topic here.
Asking for the "best way to do something" to me instantly makes the question subjective. Do you really need the best way, or will some other way also be good enough?