A thought or three:
- Read the POH
- No door on the left, so need to be more circumspect about getting pax in and out
- Double door lock, ditto
- More complex cockpit, so spend time learning around it
- Obviously different operating speeds. Don't be tempted to add anything to the POH approach speed in particular
- Does not require carb heat on approach or finals unless there's clear evidence of carb icing (which there never is)
- Read the POH
- CG varies a lot between PA28 mod states, so always do a W&CG for the specific aeroplane you're flying
- Always lean in the cruise; failure to do so pushes the fuel burn up by around 20%
- Read the POH
- Note that you have a proper alternative static, and an adjustable height pilots seat. Both missing from the C152
- Radio/intercom/navaids are usually rather more complex than the C152, so spend time learning your way around those
- Low wing, so poorer view down, much better view into turns.
- No view behind you, unlike the C152 which has a rather nice window in the rear fuselage
- Read the POH
- Performance graphs rather than tables in the manual, which will take a little while to get used to.
- Big mechanical flap lever rather than the electric switch in the C152.
- You have a yaw trimmer, which you don't have in the C152, although most people only use it in the cruise and it can be a bit fiddly.
- MUCH bigger turning circle than the C152 so can be a bit of a pain on narrow taxiways.
- Far less response to turbulence than the Cessna family, so much more comfortable in the cruise.
Oh yes, and read the POH.
G