i got a question i need mostly girls to help me out with.....

im a 17 year old male- whose only had sex twice but with only one guy- but that was like a huge mistake I guess so my parents told me I needed to get a girlfriend so I did, and she asked if we could do "the thing" (tryna keep it pg for the minors) but the thing is I don't know how to even "excite" a girl- nor how to please her in that type of physical way-. （/TДT)/