In the top left corner, click on the Raspberry, click on Games and then Minecraft Pi. When the Minecraft Pi window opens, click Start Game and then Create new. Welcome to Minecraft! All of the basics are here so feel free to take a few minutes to familiarize yourself with the controls by flying around, breaking blocks and building!
W - Move Forward A - Move Left
S - Move Right
D - Move Backward Left Click - Break blocks
Right Click - Place blocks
E - Inventory
Space - Jump (Double tap to fly or stop flying) Esc - Menu
Tab - Release Mouse cursor