Rules Of The Road Training
Scroll through the rules of the road.
Before selecting each rule "Make a mental note or paper note" Have a pen and pencil at hand to keep notes.
Works well on mobiles also.
What to consider?
If there is half a boat at the bottom of the screen imagine that is the boat your skippering.
Look at the type of boat: Yacht or motor?
Think what you should do in accordance with the COLREGS.