You’re definitely not the only one who isn’t quite familiar with the female condom.
Most people tend to be familiar with two or three birth control options–conventional condoms, birth control pills, and IUDs tend to be the most commonly-known methods–meaning that other ones like female condoms often seems to be shrouded with a good deal of mystery. Female condoms are basically pouch-like devices that are inserted inside the vagina to prevent pregnancy and STIs. Check out these weird things no one ever tells you about female condoms below.
Female condoms aren't made out of latex like most conventional condoms. Instead, they're made out of polyutherane (a plastic) or nitrile (a synthetic rubber used to prevent against diseases), so if you or your partner have a latex allergy, female condoms are an easy, safe alternative to a typical condom.
If you have a partner who's giving you trouble about wearing a condom, the best thing to do is probably not have sex with them at all. But if you have a partner who actually has a good excuse for not wearing a condom and you're willing to accommodate them, you can try a female condom, since it offers you STI protection that's totally in your control.
In vaginal sex, the outer ring of the female condom can create friction against the clitoris, which feels good for most women, since it's generally easier to have an orgasm from clitoral stimulation rather than just penetration. It also rubs against the head of the penis, which can increase pleasure for guys, too.