Hand histories can be accessed in multiple ways.
During a game session:
While playing on a poker table, you can see the history of previously played hands. On the bottom left panel, click on "Hands" and you will see a list of all the hands you have played. Click on any hand and the hand history for that hand will be shown in a pop-up screen.
Download/Export Hand Histories:
Click on 'Account' from the main menu and then click on 'Game History' and select the 'Poker Hand History' tab. You can then make your selection of the game, tournaments, dates played and based on your selection, the games played will be shown to you. Choose the game for which you need the history and click on the 'Email results to me' button. The hand histories will be sent to your registered email address as a text file attachment.