Copy event by going to Administration and Copy event. Fill out the details and set the new dates. If it's the same event but just a new year, then link the two events together in order to be able to see yearly sign up Comparisons.
Press copy and then in the following steps you select the parts you wish to copy. We recommend copying everything to get the exact same setup and then make the changes you need afterwards. You can leave images out if they are going to be replaced.