I don't want to have to go through the trouble of getting one and dealing with everything that comes with it just for a few gigs here and there. State, county or city law, so the rules depend upon where you live. If you are doing the work to help a charity, then there is no problem. As a rule, the local governments require a license for photography of a certain type.
If I can advertise myself without a license, can I use a name that I pick like Picture Perfect Photography or do I have to use just my name since I don't have a license. This will most likely be your home or photo studio location. What Was the Subject of the Worlds First Photographically-Illustrated Book.