So....I did it!
Spinning is intense. I always look in when I go by at the gym. I haven't tried it. I would set my goal as getting through the class. Go at your own pace and have fun. I am excited for you that you joined the gym, I hope you find you like it and want to keep it up. Excersise is a huge piece of the puzzle.
You should definitely try it! It is very intense. That was my goal the first day was to get through the class and I did!! I was so happy! My body wasn't though the next day lol. Today my goal was to get through it and to try and keep up a bit more by not sitting so much and I did a lot better today!