Welcome.
May I suggest that you post an introduction thread, tell us a bit about yourself and any previous explores you may have participated in. Possibly upload some pictures. Get to know everyone a bit. Or you could always just get out and look around. No one is going to serve you locations on a silver platter.
Cheers, Echo.
Pretty much what Echo said. If you look around, you're bound to found something. Hell, even on the train line from Central to Beenleigh, there's a lot of places you can spot.
If you sit near cashies for 10minutes youll see heaps of grown men riding bmx bikes, if you take a bunch of ice you may even make some friends. Beenleigh has enough to look at above ground good fun place.