I usually document myself with a mix of BI Forums, YouTube videos, the BI Wiki and the Arma Platform Discord.
On top of everything, Blackheart Six's tutorials are top-notch:
https://www.youtube.com/@blackheart_six
Also, these are some of the useful playlists/videos I am watching:
Another small update. Mission is now 1.26.5190
A much-discussed feature that hopefully addresses players' complaints that they did much of their helicopter flying in civilian aircraft. Now, they'll have a BLUFOR transport helicopter available to them most of the time.
5188 Destroy asset from distance secondary mission no longer played on Tanoa as it often fails to find good positions
5189 Players should now have a big BLUFOR transport helicopter most of the time.
5190 Build