All this said, and I agree with everything said by eyogateacher and kiki, siddhis get easier to learn after awakening, I believe...much easier. And they become much less interesting.
Yes. I never believed in most siddhis, and at the very least never thought myself capable of performing them. Since awakening, I've had many strange experiences that for the most part have taken place totally on their own with no sense of doership involved. I bought the book The Mentalist's Handbook and began to experiment with mind capability. I've since stopped.
I've stated before that since spiritual awakening I stopped having lucid dreams. I now realize that many of my experiences during sleep went far beyond the definition of lucid dreaming and into the realm of astral travel. Interstingly, the day after I stopped training my mind to perform various tricks I had an absolutely insane lucid dream:
I'm laying on the bottom bunk of a bunkbed. I sense someone is on the top bunk, and as I now live alone in my own house, I knew something wasn't right. Needless to say I don't actually have a bunkbed anyway but that's not what caused the dream to become lucid. So I get up out of the bottom bunk and see an ordinary looking fellow laying on the top bunk. Then the dream immediately skips forward to me laying back in the bottom bunk, this time sensing that someone was on the top bunk, but feeling very threatened by him. (Wow I'm not sure why but writing this out is making my whole body vibrate) I look up and see through the structure of the bed an eye gazing down on me, a very haunting stare. Now I start to realize I'm in the dream or sleep state. I rationalize that I live alone, and start to take control of the dream, although not yet total control. As I stand up, this time I see a man, with one leg missing, completely naked so that the full deformity of his body was apparent. His face was mangled and bloodied. He had sores on his body and was bleeding heavily from the head. (Upon reflection, I feel this man was a symbol of my ego/egoic life. Sometimes things gotta get messed up before awakening occurs.) So anyways, I'm completely horrified and turn to run away, while at the same time thinking this isn't real, this is most definitely a dream. Then I take full control and the house I'm in completely disappears as I'm suddenly shot into an outdoor landscape. I realize oh yeah here we go and jump off the ground knowing full well that I'm not going to land. Everything disappears. Then perception gets very distorted. I no longer sense a body and seem to be viewing the experience through a 360 degree perception. A brief transition period takes place where I'm kind of just floating in total darkness. Then a physical world becomes apparent. Steering during flight was difficult and clumsy at times, but the experience itself was utterly amazing. During flight I actually thought back to techniques I read about and was able to explore some possibilities. I'm confident that the world I was exploring was uninhabited by man, so either in the distant past or future. It sounds ridiculous I realize...
One could argue that the world I was exploring was completely the product of a lucid dream and I was actually manifesting this world within my own mind. I'm convinced otherwise. My mind was exploring, not creating. Unlike some lucid dreams, I didn't have control of the environment. At one point I asked myself where the hell is everyone. I want to see what people are doing. I want to perform remote viewing. While I could control flight I could not control environment. Moreover, the instant I asserted my mind to altering the environment, I left whatever dimension I was in. Colors got very bright, almost cartoon like, as I sensed myself vibrating into another realm. Things got very abstract. I had no idea where the hell this place was, only that it could not have been a product of my mind as this dimension was absolutely nothing like the world we live or anything I've ever consciously experienced. There were energetic sensations but ultimately the comfort level wasn't there and I woke up. If I ever get back to that place I'll hopefully be more willing to let go of environmental control, or not.
Just thought I'd share one experience,