Making people laugh is an influential thing. It causes people to let down their guard and open up and, when that happens, it gives you opportunities for inspiration!
There is no one on this earth that is just like you. Your genetic makeup and personality is different from everybody else. If you want to learn how to be funny, you've got find your own unique way of making people laugh. Learn 3 jokes, practice them till you can tell them fluently and they'll be there when you need. You can do parody humor if you find that you have a talent for copying others work in a humoristic manor. Read more hilarious jokes on http://www.vibeviral.com/
Think of the funniest stories about your family and practice telling them when you're by yourself. This way, when you get nervous in a social situation you won't have the added hassle of trying to remember your story.
Continue being funny. When you have done it for some time, it will all come naturally. And an added bonus, your friends will automatically have started thinking of you as being funny, so entertaining them in the future might be a little easier than in the beginning of your mission.
Implementing and practicing these things will make you a more likable and funnier person.