How do I last?

Whenever I masturbate I always orgasm once and it’s usually rather soon from when I begin and when I orgasm I get very sensitive and can’t continue or go any more but I always hear these stories about women having multiple orgasms. How do I last longer? Or is there a way to make it so I’m not so sensitive afterward? These may be dumb questions and if so, I’m sorry. I thank and appreciate anything you say to me to help.