Rookie Question on Calculating

Rookie Question on Calculating

Just trying to figure out how to calculate in this:

I have a form that gets:

Name
Date
Value


Name is a drop down list of people
Date is the Session Date
Value is a whole number

Want to spit out a report that Summarizes:

Name                     Total of all Values
<next name>          <Total of all Values for this name> 
etc.

I tried things like

Total_Values = Total_Values + Values but can't do that.

I've done programming in the past, by no means an expert and was some time ago. 

Pointers of what to look at in the help file ...