RE: blade cx
You can learn how to hove,r and learn the controls. You can learn how to fly in basic forward flight. Aside form that, there is nothign to learn.
They are great for fun. If you ge ta boat, I hope you have a rowboat or a canoe. Chances are you will have to go out searching the waters for your boat. Good luck with whatever you choose. Honestly, the helicopters are harder than the boats, but more rewarding. There is only so much water you can play on, there is air everywhere, so the possibillites are endless.
Good luck.
John