Alright cool. Well, you're still testing the waters but just know that Protools is one of the more expensive options, and you don't necessarily always get what you pay for.
So...What do you want to do?
What genre of music? What will you contribute?
Will there be simultaneous recordings (live group), or taking things one at a time?
What will your mixes consist of? Drums? If so, real acoustic drums or programmed?
What's the final goal in terms of quality? Are you looking for a sellable/radio playable product, or something to learn from?
Maybe just something reasonable to let your friends hear?
That kind of thing. As detailed as possible.