If you are getting ready for the Apache I can certainly recommend the Huey. It seems to be the preferred trainer. And it is a lot of fun to fly even if it is a bit old school. The Apache will be easier to fly with computer assists, but learn the Huey and you will be even better. Again, like learning to drive on a standard first.
Here is a training mission I made for my own use, based on some initial training feedback I got from some kind gents. It is designed to break-down and isolate certain skill exercises to drill with. Each station in the circuit lets you practice a different skill. Maybe not the day 1 practice. You first need to get your controls mapped and tuned and get a basic control of hover etc. The first couple of time you run it I would set invulnerable because that initial hover/taxi drill can leave a lot of chopper parts laying around if you can't maintain fine control.
Caveat. I've only been running this on the Huey, but I dropped in other choppers you can select if you own those. Can't vouch how well it works for the others yet, but I can tweak if need be.
I've found it useful anyway. Helo are so odd compared to fixed wing. You have to learn a whole different kind of feel. I can almost land regularly now. Well, I can get on the ground and at least pretty close to the spot I pick.
https://www.dropbox.com/s/a3rqwrb6widvbri/HeloTrainingMiz.zip?dl=1Last update I saw, the hope is maybe a end of Feb date. (grain of salt, etc...)