Logic Pro 7, a few questions... Options

[pahoehoe13]

im a first year music engineering student at the university of miami... this means i am studying audio, sound, and studios and all those types of things as well as music itsself... i am a jazz guitar principal and play a variety of other instruments as well... i play in a band and i compose music and know i will obviously be getting very heavily into recording music (i will be training in and eventually have full access in 2 years to a professional quality studio here at my school)... i purchased a powerbook g4 for use here at school and am looking to get some type of audio software for it... the only one i know of is logic pro 7 (which i can get through my school's software store for $300)... i really am pretty close to clueless on exactly what this software does... but i do know that its used for recording, mixing, and basically everything else im looking to do... i basically need a program that i can do recording with, mixing, playing around with the things i'd be doing in a studio, composing music (need notation software - standard and guitar tab), and everything along those lines... i see that logic has notation capabilities and recording/mixing capabiliities and has guitar amp simulators and effects... i'm basically just wondering if this program would work on my system and if maybe someone could give me a little overview of what i could do with the program so i can decide if this is the right program for me... if also anyone could tell me what some other options might be, that would be good too... thanks for your help, i know that was a lot to read but i appreciate it