Are these the videos - https://www.youtube.com/playlist?list=PLFtNdz4UYM-qNdMi5k3ODn0l50NRn6OnZ ?
There is also a nice walk-through here - https://www.airgoons.com/w/Combined_Arms to get you started. I have only played the 1st mission (MISSIONS from Main Menu, CA) a couple times trying to learn what NOT to do (I seem to do that a lot!). Just learned about re-arming, deleting Targets, etc. Still have to figure out why some units stop moving, one unit in a group won't fire, and on and on. I do enjoy (1st person) going point in a tank and taking out enemy armor though! This fills the time while I wait for my new apartment (11/1) and have space for a sim setup, just need a KB and Mouse for this... can't wait to fly again, DCS, BMS, and AH III..