A bunch of girls and guys turned legal this year. Some of them can tell older people a thing or two about sex, some of them think they can tell older people a thing or two about sex and some of them are bungling ahead in the sexual jungle doing what they know and shying away from what they don't.
More's the pity.
This guide is intended for the novice (not virginal - although it wouldn't hurt the virgin's accumulation of knowledge and might make them better lovers when they do take the plunge) and for the late bloomers.
Ladies, it is a sad fact that if you don't teach your lover what foreplay is, he's just going to go for your pussy (or your ass) each time you let him. And this is supposed to be fun, sex is supposed to be fun, intimate, arousing, pleasurable and many other things. We don't just have sex to procreate, we are all born with a libido, male and female, we all need to satisfy our sexual needs.
So let's slow him down a little by learning what stimulates his cock most (except having it vacuum sealed in a hole) and the rule for great sex when you're between the ages of 18 and whenever your libido calms down a little is to let him climax the first time by means other than penetration, because honey, if you let him in the first time, you're barely going to be able to count to 10 before he spurts into you - yes, men are that horny at this age and require very little stimulation.
Your vagina is another matter, no matter how good it feels or how horny you are, you will require between three and seven minutes of vigorous thrusting on his part before you climax.
To get him to pay some attention to your female genitalia and heat up your fire to match his, you need to acquaint yourself with his cock and all the extra pleasurable spots. These spots and techniques work whether you're using your hand or your tongue. (Other parts of your body, like feet, breasts and armpits can be used for variation.)