When you are in PT3, click on the "Sessions" tab. Just above the upper window there is a drop down menu - Display "sessions by table" or "sessions by time" - select the "sessions by time".
This then displays your recent sessions ordered by their start time in the upper window and you can click on any of these sessions to access the hands played in that session via the lower window.
In the lower window all the hands played in the selected session will appear. These can be ordered in a wide number of ways by clicking on the title of any of the colums - "ammount won", "BB won", etc. The leftmost column has no title (it is very narrow and is just before the column titled "Hand #". Clicking on the tab at the top of this narrow column will bring all of the "Hands marked for review" to the top - you will see that they will all have a small "note" icon in the narrow column.
From here just double click on the hand to bring up the replayer. you can then add notes to the hand, individual players, or have the hand formatted for use in forums which allows you to copy and paste a formatted hand onto the hand review forums for others to comment on.
Hope this helps.