1. Left Click to open the garage door
2. Get on the bus, stand near cockpit and press "C" to enter it.
3. Press "Num 6" to see the ignition switch and Left Click on the key.
4. Press "Num 5" to see the side panel and Left Click on "Elektrische Anlage Ein/Aus" to start the electric system.
5. Press "Num Del" to see the tachograph.
6. Left Click & Hold & Move Up on "Fahrerkarte 1" to insert the Driver Card.
7. Wait for the tachograph system to start and then Left Click on "Ok".
8. Press "Num 6" to see the ignition switch and again Left Click on the key.
9. Pressing "Num 8" you can see the bus' systems starting.
10. Once all systems started press "Num 5" and Left Click on "Motorschnellstart" to fire up the engine.
11. Now you'll have to wait until it builds up air pressure in order to release the Parking Brake.
12. When there's enough pressure, the Parking Brake light (( ! )) on the dashboard turns off, and you can press & hold "Backspace" and then "Insert" to release it.
13. Change the gear to "D" by Left Clicking on it or pressing "Page Up".
14. Close the front door.
15. Hit the gas and have fun!