We've updated the A320 MCDU Tutorial and added a tutorial for the FMC preflight for the Boeing 747, 777 and 787 for you.
https://www.aerofly.com/tutorials/a320-mcdu-programming/…
Heyo 8)
The Boeing 777-300ER flight tutorial is now available in our wiki:
https://www.aerofly.com/dokuwiki/doku.php/aircraft:boeing_777-300er
The tutorial takes between 30 minutes and 2.5 hours…