With the latest version of Firefox (34.0.5), using the default settings, the bookmarks icon should be up in the top right-hand corner. (It's between a star and a downward-pointing arrow). To view your history you need to click on the three horizontal lines at the top right and then (unsurprisingly) on 'History'.
Alternatively you can access them from the menu bar (with 'File', 'Edit', 'View', etc) across the top of the page. It's not shown by default but can be activated by right-clicking at the top of the page and putting a tick alongside 'Menu bar'.