As a start, flying around with your REFLEX simulator is possible but you should take advantage of the training features the REFLEX is offering. Training helps having a solution for real world problems. It increases your speed of reacting to an unforeseeable event.
Hovering
New in the helicopter biz? No Problem! Learn the hovering step by step. Let the computer take over some functions and you control the rest. Getting better step by step you may increase the number of functions controlled by yourself.
Torque
3D flying gets popular with fixed wing aircraft these days. Learn how to do it step by step, function by function. The computer controls the rest.
Simulate the worst case of the nasty part of a competition. Start your simulation at a defined height so you safe the way up.
Increase the airspeed or the bumps and do a lot of starts and landings.
Once you fly into the sun, the actual position of your aircraft is hard to detect. Training this "dry" helps you reacting safely on the airfield.
Adjust the probability of a tail rotor malfunction and learn how to detect it and how to react. Training this in real world costs money!
Landing
Problems with landings? Let your aircraft start from a specific height so you just do the landing. You safe the climbing period.
Adjust the engine failure probability and let the REFLEX surprise you with a dead engine. Learn how to react on this event without loosing (... or searching) your real model.
This feature really improves your hovering capabilities! Try to keep you heli hovering with the nose to a steady direction while walking around the model.
Taxiing your aircraft is not an easy task, especially with certain 2-wheel landing gears. As the REFLEX provides real ground behavior, you may do some training here avoiding "nose-down" situations with your real aircraft.
Practise basic control skills with the Crash&Retry Trainer. His auto rewind feature allows you to correct serious faults right after you crashed.