Overview: 

To view your 3bet hands, do the following:

1. In Holdem Manager, navigate to Cash Games > Preflop Cards.
2. Under Quick Filters, click on 3bet.
   
   You will now see your known cards that you 3bet with.
   
   You can click on a hand and your hand histories for that hand will appear in the bottom pane where you may review that hand.

Play the embedded video in Step 5: 3-Bet for more information on how to examine your 3 betting habits.