[tekdude]

One other note about simulators is that they include PID tuning (at least Liftoff does), which can be an incredibly time consuming and tedious process with a new quad if you're new to it. It's better to learn that process in a sim where you can change values and see how the results affect behavior right away. In the real world, you typically have to fly back, land, plug the quad into your laptop/phone, change the values, sync, unplug, and take off again.

[mosfets]

Definitely agree. FPVSIM allows for PID tuning as well. You can learn a lot on how they affect drone dynamics by playing with the PID values once you know the basics of PID algorithm.