Start at the front and work back
Props/Spinners (Inc Blades/CSU etc)
Engine (basic types)
Engine electrical (electric fuel pumps, alternator, plugs, EFI/ECU, "firewall forward"stuff)
Firewall forward mechanical (engine truss/nosewheel support)
Fuel system (tanks/hoses/clamps/hard lines/etc)
Analogue Gauges (plus lines and senders etc)
Avionics/electrical (interior switches/buss/circuit breakers/wire/looming suppliers, electronic senders, "firewall back" stuff)
Construction supplies (F/Glass, Wood, Aluminium, paint, etc)
Interior (general stuff - cushions, handgrips for control sticks, floor coverings, etc)
Clubs
Schools/Training organisations
Training information (books/DVD/etc)
Regional fuel providers and type of fuel supplied (linked to map?? ie YCAB Mogas/100LL fuel available from XXX company at YYY location during the hours of ZZZ am-pm. Contact Joe Bloggs on ph : 1234567)
Not sure if it is just me but the screenshot is not much bigger than the thumbnail - difficult to read