Simply add a session to your personal schedule by clicking the star (☆) icon on the right hand side of the session you'd be interested in listening to.
You can also select all the sessions you'd like to attend at once using the checkboxes, and then clicking the download icon to keep a track of all of them.
Either of these will allow you to set yourself a plan for the day and stay on top of all the necessary on-the-day information!