Can guys please give me any tips on how to perform the best Blow job on a guy?

Cover your teeth.
Apply a decent amount of pressure to the penis with you lips. Seriously when its too light it really hard to cum.
When its in your mouth use your tongue. Swirl it around the head of the penis.
If your using your hand around the base of the shaft, while sucking the top, use saliva to slide your hand up and down in rhythm with the up and down of your mouth. If you just sliding his skin covering the penis up and down, be careful pulling to far or on skin that doesn't slide can be painful.
I know this is another issue entirely, but you swallowing is amazing for a guy.

If you just show you really like to give, then it is a big turn on already.

Well start by licking on side of his dick and balls move slowly towards balls or dick; lick his balls first so that the dick can get hard also lick between balls an ass feels good. Well then slowly star sucking his dick but always have your mouth with saliva will feel like its inside the vagina also when your doing blow job tell him that you like his dick pretend you are eating something delicious (mmm its good mmm) don't look at him on face I hate when my wife sees me maybe cause im making faces of pleasure well look at him but not too often. Also softly suck his head of his dick and with your tongue with a right left motion move it inside the eye of dick were cum comes out. , if you move your tongue right way he is going to feel like he is going to come but he doesn't it great same time with you hand jack him off. Like other guys say also deep throat if you like it if not don't some girls don't like doing that. Speed it all depends on him ask him communication makes better sex.

Deep throat for sure.. have fun with it, and don't complain it just gets annoying.. we don't wanna hear it.. we may allow that with everything else but keep it to yourself here.

Deep throat/saliva for sure, wet is a must.. If you don't deep throat, it can be a let down for sure for a lot of guys.. but mix it up some...but don't stagger when you stop deep throating.. like don't take to long to get back to doing it if your gonna do something else make it fast.. but the deep throat depth and speed depends on the guy.. sometimes your better off going fast sometimes slow, depends on the guy and what kinda day he is having... communication helps..

Just watch a porn

Deep throat is always good but don't be scared

Deep throat is good the only people who say otherwise are guys with gf's who can't do it, or the gf's that can't do it. The best advice I can give is take it as deep into your mouth as you can, and wiggle your tongue side to side on the bottom of his dick. Also tease him a little by doing things like pausing to lick his balls or something just when you think he is getting close to coming that will really drive him over the edge.

Just suck the top of his cock, none of that deep throat crap, and do it gentle and slow.

You can't tell a guy to start making noises. He may be uncomfortable or insecure about it. But he will be able to tell you what he likes - personally my girlfriend puts my member in her mouth just past the 'head' and whilst she moves up and down she also takes her tongue and moves it in circular motions. But as the last guy stated - teeth are bad, they cause much pain and can cause him to go raw. Good luck and if you ask him what he likes more, while you're doing it, he'll tell you.

Rent some porn movies. It may sound gross but that'll give you a good idea. That fact your trying is awesome. The only thing involved in a good BJ is you lips, tongue and suction. DON'T use you teeth and try to keep you teeth of his little guy. The worst BJ I ever got was from a girl who just couln't keep her teeth out the equation and I was raw and sore after the process.

Collect $100.00 first.

I have a tongue piercing and the vibrating tongue ring, it intensifies the feeling. If you don't want to put a hole in your tongue you can by a slip on tongue vibrator at an adult store. Just the site of the tongue ring seems to be a turn on to guys. When giving a blow job, enjoy it allow his penis to turn you on, kinda like your making out only instead of kissing with tongues your caressing his dick. Explore I guarantee you'll know what It turns him on and you'd be surprised by how hot you'll get.

I know I am not a guy but run your mouth slowly up the dick the head of it and take your tongue and twirl it around on the tip of the penis and do that all the way down the penis and then deep throat yourself - they like excitement!

Listen to his noises while you're down there. If he doesn't make any, tell him to start. Then keep doing what he likes and stop doing what he doesn't (you can tell from him noises). It's so easy to listen but a lot of girls don't do that, I think. So you'll be the best he's ever had!