Quick Calculated Fields Question

Is there a full list somewhere of all the calculation expressions and what they do?

I'm trying to quickly learn how to use this feature because I used check boxes in my request form and now need to report on them but have no real ideal how to work with calculated fields. 

For example, I found where someone else in my company created a calculated field for the very same reason I need one but what they did doesn't match any examples I managed to track down in the forums. 

They simply used the following:  {DE:"Field Name"}