Once you've created your Resource(s), you'll link them to your Product(s) by creating Sessions in your Calendar.
Step 1: Click on your Calendar tab
Step 2: Click, New Session
Step 3: Choose the Product you'd like to schedule
Step 4: Set up your Session
Step 5: Click on the Resource(s) that you would like to assign to this Product
> You'll see them move to the left column
Step 6: Click, Create session