I've had a friend of mine helping me learn these. I've caught on and can (kind of) do them now but they still feel uncomfortable. But that's good to know there are video instructions on YouTube as well, so thanks for posting those.
It's definitely a tough thing to learn. Swimming comes pretty easy to me, but flip turns take a fair bit of trying over and over again... which sucks when you take water up your nose every time you do one lol.