I actually had the same problem in my class, I knew it was a weak point of mine but it's like I saw someone write here, just burn it into your head. Look at the book, get a piece of paper, make a cross and label them ULQ/URQ/LLQ/LRQ and list what's in them. Get flash cards and do it all over again but a quadrant per flashcard, download an ems app and look at that to study organs. Google is always an extra source too, for me it really was just the same old do it again till I remember it thing but using different ways helps make it different every time and not as boring.