Try to relax... When taking the NR don't over think the questions... Mine stopped at 70 I hopefully get my results tomorrow... As far as what you learned in class and how good your grade was most of it isn't going to be on the exam... Most of it is logic
The only full time you will have to do is the initial application w4 forms and then that company has there own way of BB, KED etc so you'll just have to be available for that stuff