Newbie preflop questions

[Cosimo]

I've got some newbie preflop questions. Actually questions everywhere, but I'll start with preflop. Right now I'm playing $25NL, so this is definitely the kiddie pool.

Most of the books that I've seen don't get too nitty-gritty with preflop play. The situations below seem WAY more common to me than "it's folded to you in the cutoff, do you raise with KK or not?" These really seem like kinder-garten questions to me. So my questions, below, are first-grade stuff. :P

Assume stack sizes are all 100BB. For now, I'd just like some clarification on standard raise amounts, what to do when reraised, playing premiums OOP, and what to do with premiums against a raiser.

1) AKs. I raise UTG+1 to 4xBB, and get reraised to 12xBB by 14.4/3.4, two spots behind me. Folded back to me. Despite a good number of hands with this guy, I haven't seen him show anything that suggested a note, so other than his stats, I don't know much about him. What would I do with AKo, or AJs? Where's the cutoff for popping him back, calling, and folding?

2) AA in MP2, 9-handed. UTG and UTG+1 both call (both are fishy, 50/10-ish). What's a good raise? I've seen the "3.5BB + 1 per limper" quote a few times. Should all of my raising hands use that formula? How sensitive is this to position?

3) AQs in UTG+1. UTG (56/8) limps. Same deal? If I'm gonna raise, use 3.5+1x? (Note that, in this case, this would be 112c, which I ain't gonna do, but I guess the 3.5+1x just means 'pot bet', right?) I'm coming from limit, and when there's three limpers in front of me, it just seems really strange to pop it to 8xBB. I guess I need to get over this, but that's why I'm asking.

4) AKo in the BB. Three limpers (52/2 calls to river with any piece, 47/12 no other notes, and one new face). Same standard raise, even though they're all behind me?

5) QQ in the BB. UTG+1 (32/8, moderately aggro and bluffy postflop) minraises, and is called in three places (27/0, 37/11, and 55/8), then it's minraised again by the SB (75/25 over about one orbit). What's my play? I'm starting to get a sense that minraise generally means A+high, like AKo or AJs. I haven't yet taken note of who varies their raises much, which of course sounds useful... but how useful? Given that I'm asking the rest of these questions, is that where I should be putting my time right now?

6) AA in the BB. UTG (64/6) limps, folded to SB (42/12) who pops it to 4xBB. SB has been making some weird plays sometimes; pushing all-in after a minraise, some stupid post-flop bluffs, and some other stuff that I just find strange. Can't think of examples right now, but he's not what I'd call a thinking player. Pop him back? UTG hasn't been calling raises after limping, so I don't expect him to come along. How does that change things?