Have you looked at any of the video tutorials on Toad World or within the TDP software? There are some quick guides built-in. Go to the View menu and click Launch Window. Then click "Getting Started Guide" and then "Create Queries."
After reviewing this, you could use the Query Builder (this can be accessed on the same "Launch Window" area), double-click the table that has the desired info, double-click the columns needed from that table, and run the query.