What are the classes like:
Well that depends subjectively on your training pipeline (officer, mechanical, electrical, electronics)
But otherwise the general jist is this:
1. Memorize what they tell you to learn. Just memorize tricky phrases and definitions. You will understand as it all comes together later on in your pipeline.
2. Classes start at 0730 and break for 10 minutes every 50 minutes give or take. 5-6 classes a day, plus lunch, plus study period, plus after class mandatory study time. Your official class day ends around 1530 give or take.
3. Homework every night, study sessions, night time instructors available, etc.
4. Curriculums of all flavor proceed like this:
Basic Overview
Key definitions
Theory/System drawings
Specific Applications in the fleet
Casualties and Troubleshooting
This builds up over a course, not one day. You start small and then build up for weeks, then put it all together, then take a final. You'll have little exams throughout, then a comprehensive one. Each exam builds on the previous. What was covered in Week 1 is testable in Week 24 and so forth.
There is no way to prepare for Navy training other than the basics I listed before.
I could send all sorts of links and details but it would basically screw you up, be unfair to you, unfair to your instructors, and there you go. Procedures change, systems change, processes change, definitions, etc.
Just chill, but its good you are motivated.
Keep that skill.
