To any man who wants to suck another man's cock, it'll come pretty naturally. All men, even straight men, seem to know instinctively how to suck cock, so if this is something you want to do, go for it. It's fun.

As for advice, the best thing to be careful about is not scraping the cock with your teeth. Other than that, all I can say is that you've got a cock yourself so you know what feels good. Finally, try not to gag when the man reaches his climax. Relax and enjoy it along with him and take satisfaction in knowing that you have given another man a pleasurable orgasm. Do NOT spit out his sperm. He havs given you part of himself as a reward for a job well done. Graciously accept that gift and swallow it, knowing that it will go down into your gut, be digested and turn into muscle tissue in you body. Part of him will become part of you. Beautiful.

the best advice is,you learn by experence.so just do it.