New to bushwalking

Hi and well..i'm a complete noob =p
Anyway as a part post-HSC thigns to kill time, i was thinking of going bushwalking and exploring, getting fit on an adventure and well, getting active of course
So i'm looking here for advice, specifically...
*where do i start? as in getting organised, what equipment would i need?(I have a few friends who did outdoor ed and duke of ed at school; so we're not completely inexperienced)
*any ideas on where? we're all pretty fit and active people,so i was thinking of maybe a half-day walk, and maybe we'll build onto camping or something. i was specifically thinking of somewhere around Brisbane waters national park(i mainly want to get on/off at wondabyne station heh) I'd prefer to look around the coast maybe, somewhere with nice scenery, water for swimming? views, etc
*equipment, clothing, maps etc. This might sound stupid but would a car's gps work?
Thanks in advance!
Anyway as a part post-HSC thigns to kill time, i was thinking of going bushwalking and exploring, getting fit on an adventure and well, getting active of course

So i'm looking here for advice, specifically...
*where do i start? as in getting organised, what equipment would i need?(I have a few friends who did outdoor ed and duke of ed at school; so we're not completely inexperienced)
*any ideas on where? we're all pretty fit and active people,so i was thinking of maybe a half-day walk, and maybe we'll build onto camping or something. i was specifically thinking of somewhere around Brisbane waters national park(i mainly want to get on/off at wondabyne station heh) I'd prefer to look around the coast maybe, somewhere with nice scenery, water for swimming? views, etc
*equipment, clothing, maps etc. This might sound stupid but would a car's gps work?
Thanks in advance!