...Much lower nose down attitude in the cruise than you'd be used to in the Cessna. Get that right or you'll not get the performance.
On take-off you need to make a positive 'break' once the speed gets to 60kts.
Direct 2-stage flap - none of that electrical rubbish. Get your speed control right for the approach and the flaps really are effective, though small
Oh - and be careful climbing in. The seats are quite vulnerable so don't abuse them by putting your full weight on the seat back when climbing in and out.
Also, the undercarriage is not as forgiving a a Cessna or Piper. It is strong, but good well held-off landings are what you should be aiming for.
The 120 is rather under-powered, but a good introduction to the type.