How I get in face select mode in Blender?
For those who are in the newer Blender versions (this is for 2.81), here's where the buttons changed to:
In a 3D Viewport editor, make sure you're in edit mode (usually by pressing Tab). The new icons will be in the upper left corner, just before the editor's menu bar.
You could access the search menu by pressing wither Space or F3 depending on you keymap, and search for "Select Mode" then change the selection mode in the operator panel.
Press Ctrl + Tab for pre-2.79 toopen a selection mode menu, or 3 for 2.8 series to immediately enter face mode.