"Jokes" are funny stories. You tell a story and hope that the ending, what is often called the "punch line", will make the listener laugh. Let me tell you one and let's hope I at least get a smile. A man who is very fond of going to the theatre to see" thrillers", sometimes called"detective stories" or "whodunits" (because you have to find out who has committed "done" the murder) goes to see a play but has a very bad seat.
He asks the "usher" (someone who shows you to your seat) if he can find a better seat because he wants to work out who the murderer is and promises he will give him a very large "tip" (a lot of money for the service). The usher finds him a good seat. The man gives him just ONE penny. As the usher walks away, he says to the man: "By the way the butler does it with the candlestick!"
There are two verbs associated with "jokes tell and make". You "tell jokes" or funny stories if you do what I have just done by "telling you a joke about" the man in the theatre. You can also "make jokes about someone". This means that you make fun of someone you know or if you are a "comic" or "comedian", someone who does this for a living, you will invariably "make jokes about" famous people and very often politicians. A "joker" is someone who is always "telling jokes" or playing tricks on people. It is also the word for the one odd card in a pack of playing cards. One useful expression connected with "jokes" is what you say to someone who asks you to do something really dangerous like bungee jumping: "You must be joking!"