To go along with the above, after hitting the "Info" button, while the screen is up that shows where you are in the recording, you can hit one of either the Right arrow or Left arrow buttons by the LIST button. Each push of the button will advance a bit in the recording, or go backwards a bit in the recording. To place a BOOKMARK, while that screen is up, hit the RED button to place the bookmark where you want. You can place multiple bookmarks. Then, after exiting the recording, next time you start it, hit the GREEN button to immediately advance to the Bookmarked spot, each hit of the Green button will advance you to the next Bookmarked spot...
If you want to remove a bookmarked spot, hit the RED button a second time while you are sitting at that bookmarked spot.