Hi Belmer
I can relate to you because my memory is bad as well.
I don't think there are that many tricks - or at least, not that I have found, anyway.
There are a few things that may help though -
A journal always helps. If you take a card a day by random and write about it, it is a good exercise in finding out what the card means to you, as well as what it means traditionally. Say you draw the '2 of Cups' tomorrow, as an example. Throughout the day, think about ways that that card could make sense in your life - you may bump into an old friend in the street, you could be going out for a drink with your partner, you could make a new friend, you may pass on some valuable experience to one of your teenagers. Look at the image in the card and jot down how it feels for you - how the colours make you feel, what the characters in the card (if there are any) are doing. Do a little research at the end of the day and see if other's insights match your own. How do they compare? How do they differ? Jot down what you find out. The more you do this, the more the cards will become yours. As well as learning the details of what they mean traditionally, you will weave your own experiences into them, which will help you remember their meanings more when they turn up again.
I have a page for each card in a book where I jot down things every so often that help. You are sure to pick up some very interesting stuff on this site. Take what makes sense and leave the bits that do not.
LB