From the HELP FILE:
"There are three separate point totals, one for fighters, one for bombers, and one for vehicles. Flying fighters earns fighter perk points and those points can only be used on perk fighters, not perk bombers or vehicles. That's true for all 3 categories. Plane, vehicle and boat multipliers and costs can be viewed in the model selection list on the clipboard in the Hangar. Along with the fighter, bomber and vehicle perk point totals, the perk points earned on your last sortie are also displayed."
"Available missions may be viewed by clicking Missions->View All Missions from the clipboard menu while online in the Main Arena. A list of all active missions will display on the clipboard swing out page."
Not sure if its updated but a read thruough of that help file answered 99.99% of my questions.