As a normal user:
> crontab -e
then create a schedule entry for the backup job every day at 2 am
0 2 * * * /usr/bin/rsync -va --delete /home/me/ /var/me/ >> /tmp/crontab.log
I had to specify the full path /usr/bin/rsync. It didn't run without the full path.
For more details see this link.