re: Poker & more aggressive...
If you want to play more loose, you should also consider the "small ball" thing, which really helped me to widen my range/hands that I play in the last time.
It basically is more post-flop orientated play, so you want to see a lot of flops and then (based on what your opponent holds/not holds) outplay opponents after the flop. Its more likely that the flop didnt help anyone than people are letting a hand go preflop.
You should only raise 2.5times the BB with this strategy, because you'll risk less chips.
Also you will play a lot more hands that have straight/flush/set value because this are the real "money hands". (If you run PT3, just look at how much you won with one pair,two pair and so on, and then look at set, str8 and flush.. self explaining.. ).
So you'll play hands like suited connectors down to 34s, any pair more often. And the aim is to hit big or make the opponent fold to a flop bet.
Whats also cool with this strategy is, that when you hold a monster you'll get more action based on the "loose" image you built up with beeing in a lot of pots.
I really recommend "Power Holdem Strategy by D. Negreanu" for this strategy. Its an awesome book with some other chapters than "small ball", too I'm still reading in it, but it already helped me to improve my game I believe