Two steps to remember something for a long time!

1. Try to make connections between what you're trying to remember and something funny, weird or unusual. The use of 'pegs' makes it easier for you! Besides, making great effort to remember things mechanically only works for short periods. If you try to recall them after a longer period, for sure you won't be able to do so!
2. If what you try to remember are words or terms, try to use them as much as possible. As long as they have a meaning for you, your mind will immediately get rid of them. The idea here is to make them part of your daily life so that one day those things are unconsciously inside and there's no need to remember!