FMB Basics

[FA_HRD]

I hate to be a complete moron but where can I find the simple basics of building a mission.
The manual doesn't cut it and I would like to build a simple mission with every British plane in it with a ground start so I can test/ fly each and every one, one at a time. If that makes sense?
I have been building missions in IL2 for years but for some reason I can't wrap my brain around this one.

Appreciate any help. Thanks.