I know nothing about NL. Preflop basics. 1/2 Live

[Man of Means]

What are the other limpers' stacks?

I generally play this the same way but raise a bit more ($12-15). You're raising preflop in position to build a medium sized pot, hoping to flop top pair or a strong draw and get most of the money in on the flop ... or take it down with a c-bet.

When button reraises and it folds around, you usually fold or move in depending on your read of the player. Calling / Stop and go is another option - you'll have a PSB to move in on a favorable semibluffing flop like 9x8x6s.

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edit:
Your raise looks a little weak, so button's reraise may not be a reliable indicator of strength. Some would see your small raise as a "pot builder", something you do to make a multiway pot bigger for exactly the type of hand you have, suited broadways or medium pocket pair. So he may be reraising with something like 77, KQo, or T9s figuring you'll muck in fear of domination. However if he's a straightforward nitty or passive player, you're smoked no doubt.