If there's anything that Blender is known for (other than being a totally sweet 3D modeling and animation tool), it's the extremely fast hotkey workflow that it uses.
Blender will absolutely put your keyboard to work. Just about every key and key combination can access some feature in Blender. Yowsers!
The cheat sheet I've put together here doesn't cover every one of those keys. That's been done, and it covers roughly the size of a wall poster. Instead, this cheat sheet focuses on the most common and frequently used hotkeys and mouse button presses.
If you get these down, you'll find yourself comfortably cruising along in Blender, way faster than clicking through a bunch of menus and submenus.