There is nothing more true and right than being yourself to find friends. You are the best version of yourself, even though you are not perfect, but that is what makes you unique and different from others. There is no way to find out what she/he likes, but only being yourself and attract people who appreciate you. Instead of pretending to be someone you are not, you might as well focus on how to make yourself better. There is nothing you cannot achieve.
Don't be a jerk.
If you are a jerk, then the first tip doesn’t count. If you are a jerk, don't be yourself. This applies to your daily life, just as it applies to one night hookup. People just want to go to bed with the real dick. Acting like one will definitely not let you go to bed. Just be nice, even it’s just for a one night hook up. This principle suit in every circumstances and can never be wrong.
Get ready to spend some money
Although people like "independence" and "self-sufficiency", going Dutch in the first date is not romantic at all. If you ask someone to go out, just pay for it. I know you might think that is not a rule, but that is a very nice gesture. You can decide for yourself whether to do it or not, but I am telling you, paying for the first date can definitely double your chance of getting laid. Take them to a good place. Make them think that they owe you. Your chance of succeed will be increased significantly.
Be good-looking
I believe that no one is ugly, but I also admit that some people are more blessed in appearance than others. If you are one of them, good for you! You will have greater chance of finding a one night hookup than others.
At least, smells good.
If you think your appearance might not be your top advantage, it doesn't matter. Make sure you are particularly clean. That is the easiest thing you can do, isn’t it? Just take a shower and take on a clean clothe. Don’t let your smell drive people away.
Calm down and don’t be desperate
Try not to let the nervousness take over you. The worst thing is your being rejected. So just learn from the experience and move on to another person. It is no big deal. Also, you don’t want to act like a desperately horny pervert. Basically, you want to find a delicate balance between showing you are not interested in getting into bed and showing "but definitely open to it."
Be honest
Sometimes honesty is the best strategy especially when it comes to putting your genitals together with others. This includes be honest with what you want and who you are. Don’t pretend that you are open to relationships while all you want is just a one night hookup.