You probably understand much better than you give yourself credit for. A few questions for you to answer that might make you feel better as you likely already know the answers to all of them.
Using a general description, how does the baro altimeter function?
What are accelerometers used for?
GPS is used for what?
Can the aircraft be successfully flown and be under full control without benefit of GPS?
The 2.4GHz frequency is used for what"
The 5.8GHz frequency is used for what?
The aircraft uses 4 primary flight controls. Name them.
How is measured altitude presented, above sea level or above ground level?
What is the purpose of Smart Mode?
How does Smart Mode function?
How does Angle Mode differ from Smart Mode?
Using a general description, how does RTH function?
Can RTH activate automatically?
If so, how?
What is the rated voltage of the flight battery?
How many cells does the battery have and how is that represented in labeling?
What is considered to be a safe charge rate for lithium polymer batteries commonly used for multirotors?
What is the minimum safe voltage level of your flight battery?
What is the effective range of the aircraft? (this is a trick question)