Do I sound like someone who has autism?

I have trouble making friends my own age, but get along better, and seem to make friends better with children. I have trouble gaining any hobbies. I seem to have this problem with my vision and hearing. Like when watching a video about trucks. I can sit there and watch the entire video, but will have extreme trouble explaining what I just seen. I also have trouble with my hearing. When my brother was trying to tutor me with math, I had trouble understanding what her was trying to tell me. Its like I can hear what he is saying, but cant fully get it or understand exactly what he is saying to me. I have trouble understanding the complexity of something. I can only understand the basics. Remember I said mentioned trucks? Well I can see a black truck, and can even describe its shape, but cannot tell you anything else about the truck. I can say what it looks like, but am unable to explain anything complex about the truck. Anyone have any idea what could be wrong with me? Anyone willing to let me e-mail them explain more?