Also, do not argue with the instructors. This isn't flight school where the local CFIs are sitting around jaw jacking about the best way to do a lazy 8. In ground, you'll hear "PSA Pay, PSA Way." Do it the way the schoolhouse tells you. Arguing is the quickest way to get sent out the door. Previous 121 guys are susceptible to this problem so you have an advantage. You are nothing and know nothing at this stage. Once you get on the line, you'll figure it out how it's done. The good thing is you'll have good people working with you who will show you how the real world works. This can be said for any airline, really.