I don't know that it's a bad idea, but I would suggest having a solid knowledge base before trying to learn magic from non-human beings. They're apt to think significantly differently from people and likely have very different ways of viewing and interacting with things.
If you wish to learn from magickal creatures such as the fae, you'll have to learn to astral project. Why? Because the fae don't occupy the physical realm. Fae and other magickal creatures exist and live on the the astral plane.
I myself feel that it is better to learn hands on, so that's why I always suggest astral projection when someone wants to learn magic from different beings. You could perhaps call to them or talk to them through your circle, but I feel that with astral projection, it's a much more exciting and immersive experience.