R/C Cars
At a basic level, many droids are "just" fancy R/C cars. The typical example is a mouse droid, which is basically an R/C car with a funny top.
Check out the R/C Glossary
R/C Car Anatomy
R/C cars have a
Battery Types
Batteries are worthy of their own page!
Glossaries
Resources
Your local hobby shop can probably provide some instruction, there are probably also local R/C enthusiasts near you, and there are online clubs as well. Their focus is typically a little different than ours, they want fast or powerful, vs the long battery life we need in a show. Racing a car means as close to full speed as possible, and an ESC (