Rule #1: Consent. Make sure they want it and that you want it. Anything other than an enthusiastic YES, means NO. If she's drunk, that's not consent.

Rule #2: Be safe. Use a condom. Google how to use it properly so it doesn't break. Get tested for STIs.

Rule #3: Communicate. Tell her you don't know how to make her feel good and ask her to show you what she likes. If she knows her body from previous experience or personal exploration (masturbation) then she will show you. If she doesn't know, then suggest trying something you think she might like and ask if she'll try it. Be prepared to stop and try something different if she doesn't like it. A lot of women are discouraged from masturbating because it's stigmatized, so encourage her to explore her body.

Same goes for you. If you don't know what you like being done with your body, experiment on your own or ask her to try something with you.

It's about communication. You have to talk about it with your partner, constantly, to make sure you're both comfortable.

Sex for people with vaginas shouldn't hurt, the hymen doesn't "break," if your partner is bleeding after then they weren't turned on enough and didn't have enough lubrication. Lube is your friend. Foreplay, foreplay, foreplay. Kiss her, caress her, play with her breasts if she likes that. Talk to her. Use your fingers to touch her. It's totally cool if she has an orgasm before you start penis-in-vagina sex. In fact you'll both be happier that way, LOL. People with vaginas can have multiple orgasms. The more turned on she is, the more easily you can penetrate her without discomfort for her. Don't just dive in, go slow until you're both comfortable.

Most people with vaginas can't orgasm based on vaginal penetration alone. It takes clitoral stimulation. The clitoris is a little bundle of nerves and tissue that is above the vaginal opening (google for a diagram of the genetalia). It's full of nerve endings and you can think of it like a tiny penis. If you really want to make her happy, learn how to perform oral sex well. Use your tongue and fingers.

If you orgasm before your partner, sex isn't over. You can use your hands, mouth, a toy, whatever to make sure she has a satisfying experience.

Vaginas don't get stretched out based on how much sex someone has. It goes back to its original state.

Real bodies are not like porn. Vulvas (the exterior portion of the vagina) and labia (the "lips" of the vagina) look different on each person. Some are little, some are big, some are dangly. Some vaginas have hair. Pubic hair is not dirty. It keeps vaginas clean naturally.

Sex isn't like porn. It's messy and silly and sometimes you fall off the bed or trip on your pants or somebody farts. You need to be able to laugh with your partner.

If you're able to access porn you're able to google this stuff, my friend. Try Scarleteen. Best sex ed on the internet.