Way to go Mike! You're about to embark on the greatest journey of your life, Marine Corps Boot Camp on PI.

As Tom pointed out, move fast and have an instant obedience to orders. We even had a saying for it which I'm sure is still around (D-I-S-C-P-L-I-N-E! DISCIPLINE! DISCIPLINE! DISCIPLINE! DISCIPLINE IS THE INSTANT, WILLING OBEDIENCE TO ORDERS!) so think of us as you're screaming it at the top of your lungs.
Don't EVER forget to say "by your leave Sir!" when you pass a DI from behind, you WILL be on the quarterdeck.

First and last words out of your mouth are always "SIR!" and you no longer exist in the first person as you pointed out in your thread title, it's always "this recruit".
Learn your "knowledge", if you haven't started already I'd recommend getting a hold of an Essential Subjects book from your recruiter. KNOW your General Orders, it will help get you a good start. The rest your Drill Instructors will teach you on the Island, listen to them.
Best of luck to you and we're all behind you here, check back in when you're done with recruit training.
Enjoy "The Pit".

Semper Fi!
Moe