How do same sexes have sex?

With men, they usually have anal sex with each other.
Anal sex is were the giver penetrates his penis in the anus of the receiver and thrusts the same way as vaginal sex. men can also give their partner oral sex (fellatio).

With women, the giver normally use a strap on dildo which is a fake penis and penetrate in the receiver like normal vaginal sex. woman can give eachother oral sex as well (cunnilingus).

Each couples who are gay can do others like foreplay, handjobs, cumshots and many more.