FIRST JOB STARTS TOMORROW....AM SCREAMING

Usually, I'm excited about new experiences and things for me to do!!! I love to do silly little tasks and getting rewarded for it [don't we all?] But I'm starting my first real life big boy job tomorrow AUGH!! 

I've never had an official job before, I've never been paid with real money or had to do closing shifts [that's what I'm gonna do when I'm there ^^7]. WHAT IS A FELLA TO DO?? I've heard through a buddy that they will be training me for the next few days so I can get used to how it all works, which will most likely be true! But I'm still so anxious about it all! I'm physically all ready [got my clothes >:)], but I AM NOT MENTALLY READY!

Is anyone happens to read this and they've had a job before, what was it like for the first few days there? I'm gonna work at a local sandwich shop [NOT SUBWAY], what does the first days look like??? I like to be prepared ><