You also forgot weather in general, meaning reading METARS TAFS, Weather depiction charts, Area forecast, radar and sattelite maps..
Lots of stuff on regs, (what the aircraft has to have all the time in its cockpit (registration, airworthiness certificate, radio license etc)
Your privileges and limits as a private pilot.
The required equipment on the aircraft for day and night VFR.
The required documents to possess at all times while flying as a private pilot.
Maintenance regulations.
Questions on your aircraft systems, fuel and oil type.
Probably quite a few more things which I forget but will post when it comes back to mind.