Read the Flight Manual which can be found on the Help page. It explains the procedures for startup, takeoff, climb, cruise, approach and landing, as well as how to use navigation systems, radios, etc.
If you are really impatient, just use the checklist in the kneepad (although it may be difficult to follow the procedures without first reading the Flight Manual).
For Draken 5.0 you can always use the support forum to get help and to submit feedback. As a last resort, use the contact form to send us a message.