Any woman can squirt, I firmly believe that. My current main girlfriend used to think she was one of those girls who can't, but she did it with me once so out the window went that theory.
You gotta get in there and hit her in a certain spot, you'll know you hit it because she'll say "right there right there" over and over again. Just keep hitting that spot with your index finger. For one girl I did it with it was her g spot, which is about an inch inside her poosy on the top. Another girl I did it with it was real far inside the vaginal tunnel and just a little to the side. You gotta play around a little and get a sense for what their sensitive spots are. From what the girls tell me it's super intense, and I can see for myself their entire body starts shaking and quivering.
You'll know she's about to squirt because she'll tell you she feels like pissing. If she says that to you, don't stop because that's how you know the gusher is about to come.
And when it comes it'll be crazy.. like a kitchen faucet was turned on and spraying at your hand. There will be a lot of liquid, it'll soak all over your hand and sheets.
Some girls who are more sexual will be able to squirt more easily. The women tell me it's all about the state of mind, so maybe try lots of foreplay and the kind of dirty talk that women love to hear (ie oh baby your poosy feels so good etc).
I've read a couple of scientific studies that concluded squirting is like 90% piss so don't be licking that stuff up.