Use mind games to help memorize stuff.
The "Pecking Order" list of Right of Way going from "Stand On" to "Give Way is: Not Under Command, Restricted in Ability of Maneuver, Constrained by Draft, Fishing, Sailing, Power Driven Vessels, and Seaplanes. Vessels at the top of the list have the Right of Way over vessels below them on the list. Now take the first letter of each, and you get N R C F S P S. Now memorize this: New Reels Catch Fish So Purchase Some. See the first letter of each?
"Minus 20, Sail, Fish, Cross." Memorize this. This is the list of vessels that may not impede a vessel that must stay in a channel. As in, a vessel less than 20 meters long, a sailing vessel, a fishing vessel, and a vessel crossing that channel.
I also remember that the CG will never have a correct answer choice that says anything about "stopping" or "stop" your vessel.
Obviously there are many more of these mind tricks, but I always found these helpful. Good luck.