How can you make a fire without matches or a lighter? If you are outdoor you can get a heavy wooden cylinder and a wooden board and you should rotate energicaly the cilynder against the table, you should put dry leaves and dry chips at the contact point and with a little touch of luck the fire will start.
How can you make a shelter? You should get long canes or sticks and big leaves like palm leaves, you should make a type of tend by using this material or others.
How can you signal for help? You can make a signal of help by controlling a small fire but not to cause a forest fire, if you can not make fire you can try to make letters with stones or pieces of wood and you can put words like " help " , etc. You can also make big noise by using a car horn, etc.