Can I extract multiple data points from one field?

If one field contains multiple pieces of data (an email address, name, phone number, and address all in one cell, for example) you can use Data Hooks® and virtual fields (only available in Portal 2.0) to split that data into individual fields.

Check out the docs on Data Hooks® for Portal 2.0 here, and Data Hooks® for Portal 3.0 and Workspaces here.