Summarize the following:
Setting natural curls in a bob is easiest when your hair is already wet. Plan to style your hair this way when you are fresh out of the shower or have dampened your hair. To dampen your hair, you can put water in a spray bottle and mist your hair, or you can put your head under a faucet in a sink or bathtub. There are many products available on the market that are specifically designed for use on curly hair. Choose one that fits your type of hair (e.g. thick, thin, fine, damaged, et cetera). A mousse or a gel would work best. You can also select a hairspray to finish. Oftentimes, this is enough for naturally curly hair to set well. However, there are a couple of additional steps that you can take, if you desire. Consider using a diffuser on your blow dryer and drying your hair with that. This both adds volume and curls your hair. Spritz hairspray onto your hair to really secure the curls. This could results in your hair looking "crunchy" and hard instead of smooth; it is up to your preference of how you want your hair to look.
Wash or dampen your hair. Select a styling product intended for holding curls. Allow your hair to dry.