It is essential to understand what you are getting into. You need to understand the mechanics of cars and how they work. This will allow you to be prepared for your first day at work.
You should also know how to fix common problems such as tires or broken lights.
This should help you learn how to diagnose issues and repair them yourself.
To put the pieces back together, you will also need to understand how they fit together.
Finally, it is important to know how tools can be used safely and efficiently.
These are all things that will make you a competent mechanic.