You can start by reading books on the basics of car repair, such as "The Complete Book of Automobile Repair" or "Car Repair for Dummies". You can also watch online tutorials and videos to gain a better understanding of how cars work.
Another great resource is the website Self Growth. This article provides an in-depth guide on how to prepare yourself to become an auto mechanic, including tips and advice from experienced professionals.
Additionally, you can consider taking online courses or attending workshops to learn the necessary skills and knowledge. Many community colleges and vocational schools offer programs in automotive repair that can help you get started.