Bairne Track - what next for a starter???

Being reasonably new to MTB I found some info on Bairne track on this site and did the ride last Sunday: great fun for a beginner. I also did Soldiers Point and only about 200m of Portuguese as I was'nt sure how far down this went, roughly how long does it take to do Portuguese back to the main track? Also, what other tracks in the area can anyone recommend that are a bit more technical than Soldiers point ie: the next level up without wrapping myself around a tree!