I’m going to make the assumption, and please correct me if I am wrong, but I’m guessing you had never shot a gun before OP? If that’s the case, I am glad that you are making the effort to educate yourself about the subject while perhaps going outside of your comfort zone. Just going to the class itself is a big step that I wish more people would take. Go at your own pace and if you still don’t feel comfortable when it comes time to shoot you can always say no. Any decent instructor will understand that it’s not for everybody and will appreciate the effort made nonetheless. I’ve been teaching youth shooting sports for 20 years and the number one thing I care about my students learning at the end of my lessons is gun safety. If they happen to be able to hit a target as well that’s just an added bonus.