BODIES. We sometimes forget that the entire body is an erogenous zone. Sensitive areas include the face, ears, neck, arms, chest, belly, back, butt, and thighs, back of knees, calves, feet and toes. The entire body can be used to excite a guy. Rubbing bodies together is very stimulating.
FINGERS. Fingers can be delightful to use on those guys who enjoy penetration (not all gay men do).
HANDS. Running hands up and down a lover's body will often elicit electric responses of passion. From light caresses down the back to deep rubbing across the butt, caressing is an important aspect to sex.
MOUTH. Kissing is a good place to begin and a very important part of sex. Kisses come in different styles depending on the person, the mood and the moment. Tiny, soft kisses tantalize and intrigue. Deep, open-mouth kisses with tongues entwined convey a depth of passion and longing. Kisses are appropriate for any part of the body, wherever one feels the urge to place them, lightly or with trailing tongues. Gently nibbling or sucking on a penis is enjoyed by most gay guys and most often results in orgasm.
PELVIC AREA. Rubbing genitalia together is a great way to have fun with your lover.
ANAL SEX. Anal sex can include anilingus (licking the anus) and/or penetration with the penis. Some gays love anal sex, others do not. Like everything else, it's all personal preference.
MUTUAL MASTURBATION. Some gays enjoy mutual masturbation. Lying while facing each other, simultaneously rubbing and touching each other's penises can be educational as well as enjoyable.
Sex is all about love and pleasure.
NOTE: Many of these things can be a part of straight sex. Many straight men enjoy anal stimulation via dildo or hand, usually given by his girlfriend.
As opposed to straight sex, there are no vaginas involved. Otherwise the two are very similar.