A few have mentioned it before but it's so important. Feel comfortable with your instructor. There are different grades of instructors. Nothing against Grade3s(I was one once) but it means you'll have to change to a more senior instructor when up for solo checks. This often doesnt go as smoothly as it could. Having been on both sides ( as a Grade1 doing other solo checks) people can get the yips with a different person next to them and not fly as well as they did last lesson. A grade 2 or 1 can do all your solo checks.
You can do a lot towards your smooth progress. Turning up to your lesson well preparred, on time with your sh*t together will go a long way.
You need a flight review every two years. This can be just a straight review or you can combine it with a new aircraft rating so it can be used to fly something new. You need to maintian at least 3 take-off and landing every 90 days. But for safety(especially if your taking the family with you) bank on doing a bit more than that.
Do the CASA medical now, even if you take the path that doesn't need it (not familiar with that one). It's valid for 4 years and will give you the peace of mind that you can actually hold the medical and not give you an unpleasant surprise when you try to change your licence over.
Ask questions. The only silly question is the one you don't ask and nobody has ever died from embaressment.
Enjoy.
DT