You have heard it said that you should backup your computer. You can't say it enough. Anyone running their own courses should have backups of their records. No matter which backup solution you choose you should start with a full backup of your system and then run backups on any files that have changed perferably at the end of each day (these are called "incremental backups"). Also, before you begin trusting this backup system try restoring a file and make sure it works! Not only should we backup our computers but also our phones. What if you lose your phone - would you lose valuable contact details?
All the best,
Netweavings Web Design and IT Support