Once again, I am amazed at the number of men who have "NEVER" been with another guy but post on this site?????????????? Are there that many "curious" men or are ALL men curious about sucking another guy's cock???
Try going to an ABS (that's Adult Book Store) with glory holes and see what happens. Bars and clubs are good if you're experienced but not for the "Newbe". An ABS gives you the chance to see cocks face-to-face so you can just jerk it a little, see it and if you can get the nerve, take a quick taste. Also, you can hook up with one of the many men that has to be near you and be honest with him.
Based on what I've read here, there hundreds of guys that have also never sucked a cock but post pictures of themselves naked, hard and some jerking off for all to see. Maybe you can hook up with one that's just as nervous or "curious" as yourself so there should be less pressure. You can both learn together. Oh, and by the way, it's great, fun and very sexy!!!.