Study the humor of the people around you. Watch funny movies with your friends and pay attention to what people laugh at. Take mental notes of what people find funny and recall these situations or create jokes using this information.
Watch and listen to many comedians. Access older material online and watch contemporary comedians performing live. Pay attention to what the audience responds to favorably and take notes on what you and others find especially funny, whether it's a specific style of delivery or a theme.
Practice your delivery and come up with a unique style. For example, some comedians know they are not especially outgoing and are unlikely to be the star of most casual social situations, so they rely on an awkward charm to win over audiences. Decide which personality trait you wish to emphasize while you deliver your jokes.
Pay attention to detail. Many successful comedians draw attention to the humor in the mundane details of life. By observing the world around you, you will notice commonly overlooked nuances of life, politics or human interaction that you can incorporate into your comedic routine to help you relate to audiences.