Here is a great little technique I found from Johnplaceonline.com.  I have summarized for you below:

1. Create a list of short sentences with facts you want to remember.

2.  In a quiet place, read you first sentence out loud.  Then close your eyes and repeat.

3. Next do repeat the process using the first two sentences, then the next three, etc.

4. Continue until you can repeat the entire list.  Once you have take a nap or go to sleep.

That is it.  It works, and can be quite useful when you need to memorize facts for a test, presentation, or negotiating a car!