Hello! I'm a 33 year old male who is also a new user here taking engineering calculus. I starting going back to school when I was 31. I find as an adult you have more of a drive to do well in the course and you are wanting to understand theorems at a more fundamental level. I've also found the calculus not an issue so much as the algebra. My weak algebra skills I obtained in high school have hurt me more than anything. I find myself making silly mistakes all the time where it's second nature to the kids I study around.