Node clone is a module that will let the content creator clone a particular node, make edits and save it as a new node. This is particularly useful when your content/content structure varies very little between nodes. You can enable this module by going to the Modules page.
How to restrict the Node Clone to certain content types?
Go to Configuration --> Content Authoring --> Node Clone Module and scroll down to the area where it says "Content types that are not to be cloned - omitted". Uncheck the items you don't want to be ommitted and save the configuration.