I am an ex real pilot, trying to setup MSFS 2020. No manuals or installation guides anywhere, it seems. In the Flight Training section, all but 2 of the 7 sections are greyed out. So I tried the traffic pattern section. All set up, pushed the throttle forward, and the program says to press 6 to release the parking brake. 6 doesn't release it on the main keyboard, 6 on the number pad changes a cockpit view. Spent a fortune on brand new hardware and can't even take off. Any ideas where I can get installation help?