You asked questions, did your research, and picked a gym to sign up at. Congratulations! This is a great first step, and you should be feeling excited to go to your first class. Before you can jump on the mats, though, there are a number of things you will need to do.
Arrive Early if you are Signing up Before Class
Signing a Waiver is Standard Practice
Try one or More Free Classes Before Signing a Contract
Look out for Surprise Fees When Signing Read the blog post at: https://www.howbjjworks.com/bjj-blog/2018/8/24/how-signing-a-contract-at-your-bjj-gym-works