Setting a reminder

Setting a reminder

Hello,

I just signed up for the free edition and couldn't find this information anywhere:

When you create a task, such as call a lead, for the future, how do you set the system to email you on that specific day to remind you to make the call?

Example, today is 7/1/13, I need to call the lead on 7/30/13, what do I do to have the system email me to tell me to call the lead on 7/30/13?

Thank you!