How can I update events already set up? Please send me the steps to update the informationon the events page.I am unsure the steps for updating the page.
Welcome to CiviCRM SE. I think you should find all this in the docs at https://docs.civicrm.org/user/en/latest
But quick answer is, in the back end, select Manage Events in the Events menu. They select Configure for the event in question. Should be obvious from there...