It really is not hard. Standard kind of combat mission, theater of war etc sort of set up. The tools and icons for the tools look about the same too. The right panel of the UI is a bit different. Just use roll overs and it sort of tells you what it does.
The only other war games I have really played are the original combat mission games CMBO to CMAK.
I did try operation star but found it a bit hard, but I have always wanted to play a tank sim, so will give this one a go tomorrow. After watching a few youtube videos it looks really intresting. Not sure but I think if the publisher put a biy more effort into the manuals and proper tutorials these games would sell a lot more.