Some Basics:

Move (Grab): Press G

Rotate: Press R(Then Z,X or Y to rotate on that axis)

Scale: Press S(Then Z,X or Y to scale on that axis)

Pan camera: Hold middle mouse button and move mouse

Zoom: Scroll wheel

Switch between viewport and edit mode: Press Tab(Make sure you have an object selected before going into edit mode)

Extrude: Press E(Then Z,X or Y to extrude on that axis)

Duplicate: Press Shift+D(Then Z,X or Y to duplicate on that axis)

Delete: Press X