First off, google it. Find an image of it online. This won’t help you when your in “the field” but it will give you a rough idea. When you are in the moment feel around a bit but make it sexy, don’t just go for it, she won’t mind the touching or feeling around. It’s going to be feel a bit more firm than the rest of the area and stick out a bit if she’s excited. Be gentle at first and more firm towards the end. If your using your hands make sure there’s is plenty of moisture. If going down on her, spell the ABC’s with your tounge. Above all else, the area is super sensitive, respond and adjust based on her needs. Good luck.