margrades,
i'm very new to NL but from what i've learned:
You dont raise anything but very good cards from the blinds in this situation. its because a hand like 55, is terrible aganst a field of this many people. the only time it will be good is when you flop a set. Also, you are out of position, this is very, very important. Position means everything.
the button is the most profitable pos of all, the closer you are to it, the more you raise.
so after you've raised and are first to act, i think a bet is fine, but you want to bet 1/2 2/3 of the pot size. .30c is very low and shows lots of weakness, + you are giving your hand close to zero value.
and the call is bad, its a fold =(.
here is a lot of material to help improve your game.
http://www.pr0crast.com/2+2.NL.Anthology.v1.htm
i hope i havnt mislead you, hope this helps.