There are plenty of car maintenance classes offered online. Doing a web search will bring up tons of options. There are basic car maintenance classes, advanced classes, classes that specialize in classic cars and even professional mechanic classes. In addition to online courses, it is a good idea to check with local community colleges. They often offer online courses as well as courses in a more traditional classroom setting. While online courses are convenient, hands-on experience can be invaluable when studying auto mechanics. It is often easier to learn by doing when it comes to fixing and maintaining automobiles.
For more info, see Tips for Finding a Car Maintenance Course