Hi there, and that is awesome you are in the operating room!! In my opinion, the best department to work in
Alexander's is a great book, it has tons of information and can be helpful. I also found the Pocket book Guide to the Operating Room by Maxine Goldman very helpful. It is a small book that basically summarizes the different procedures and guides you to room set-up, prep, equipment, etc. It is very basic and is a "starting" point, but /i find it helpful to have when I come across a procedure I have never done before to get a general idea what I'll need. You can buy it on Amazon.
The operating room can be very exciting and also very stressful and yes, there are so many different personalities. I have been in the operating room for 5 years, and like yourself, I did a practicum when I graduated school. My best advice is to be prepared, ask questions, take a ton of notes, and jump in and learn. I have a quiet personality, and I feel it is good to be quiet, but speak up when needed, and don't take anything or anyone too personally. I had to learn to let the "strong" personalities go. No one can fault you if you keep to yourself, but also are learning and trying the best you can.
It takes awhile to adapt to the OR, but once you feel more comfortable, it is the BEST place to work, and you never stop learning new things, so don't feel like you're not "getting" it
There is so much out there and believe me, it took along time for me to feel comfortable, but just hang in there and enjoy it