How to memorize things quikely and correctly?

This weeek, we have the English lessons about memory,It’s the chapter 6 of our English book.Now I know a litttle about memoty. I know that we have immediate memory, short-term memory and long-term memory.when People get old ,their short term memory becomes worse.when something dramatic happens, we usually remember it well.
But I only know one way to improve my memory. that is to make a picture in your mind.I want to know some other ways to improve my memory. Can you help me ?