Learning to key out plants is the most fun way. Once you learn how to key out plants, you are empowered! You can figure out the id of any plant yourself. You don't have to ask anyone, or spend frustrating hours looking through pictures.
Instead, you can then spend frustrating hours trying to use the key. (;-)
The best way to learn how to key out plants is to take a class from a local college. Nearly all of them offer classes like Botany 110: Botany of Spring Wildflowers (Palomar Community College), or Plant Identification.