If a cell cointains a specific name, then the value...

Hi!

I'm really new (dumb) when it comes to using excel and I've been trying to make my expenses spreadsheets more functional.
Here's the layout?

A column = type of expense
B column = date
C column = details of that expense
D column = payed in credit
E column = payed in debit

The formula I'm trying to come up with is this:

If A2 column says FOOD (or one of the 10 other categories I've created), then check on D2 and E2 (meaning the same row) for value and ADD those values on E92 (in this case, the FOOD sum of all related expenses).
It should be checking for the category on the first column, then looking for values on D and E, and getting those values added to the corresponding category sum up cell.

Does that make sense? Is it possible?

Thanks in advance!