I'm trying to think back what it was like the first time I started STS. For sure a little daunting with the one rep max tests and then figuring out how to print and use the Calendar and Workout manager. Once it clicked it was like wild fire! So patience with the first couple of workouts, don't demand perfection from yourself, just relax and enjoy the journey.
Do the one rep max the best you can, if you can't finish them up, or its too much trouble, then put a number in and go off of that, trust me, you can change anything you want later.
I think this is critical though, learning how to then edit your numbers and change them either in the Calendar where you bring up each workout and edit them there, or under STS in the Workout Manager. Anytime I had a change of over a pound I was marking it on the sheet, then I'd collect that week and input the numbers so the next set had the new weights listed. I always printed out fresh sheets and made notes. I've also kept each rotation set of sheets to look back on. Sometimes I would review the moves when I was on the computer through the video snippet that is attached to each line on the sheet before you print it out.
For that day's workout, look over the sheet and try and set up your weights as best as you can. I have several barbells and a pretty good sized gym, so its easy for me to say that. But its a good thing to organize yourself before the workout. Know the weights you are going to be setting up with. Have a towel, water, good light and clear the kids/pets out.
Everyone is going to have their must-have equipment, but I found a weight bench was much better then the step for support and it doubled for a chair.
Don't be afraid to sub things out that don't work for you. For instance, deadlifts for me regardless of my form, give me a lower back twinge if I go as heavy as I know I should. I've subbed seated back extensions with more weight and I have better results. (I have a cable machine.)
Right afterward make sure you get in some good protein.
Make sure you get enough sleep.
Have a really good stereo system and turn it up!!!!!!!!
Have fun with this, if you follow 80 percent of this program to the end, add in the cardio, and eat right you are going to see a whopping change in your strength and attitude.