This video is an introduction to Salesforce.com and is intended for nonprofit users and administrators who will be using Salesforce and the Nonprofit Starter Pack (NPSP) for the first time.

14m:30s

This training video talks about use cases for Salesforce Roll Up Summary fields, how-to create them, and how-to manage them.

10m:8s

In this training video we cover the power of formula fields in Salesforce and provide some practical, hands-on use-cases for formulas in the Nonprofit Starter Pack (NPSP).  

16m:56s