Use Learn button daily to make sure you do not forget what you have learned. Use Add new (Alt+A) to add new questions and answers.
Do not forget to back-up your learning material from time to time. Use Ctrl+Shift+C (Copy collection) to copy your material to some location on your hard disk. Or better yet: on a DVD-R or a flash drive.
You have two B-choices: Back up or Be sorry!
To learn more advanced options of SuperMemo, visit 25 Steps to SuperMemo Mastery at supermemo.com.