Welcome to the forum.
Open an existing title that you want used as a template. Go to Title | New Title | Based on Current Title.
Open up the original title and click on the 'New Title Based on Current Title' button (A film frame with a T in it). This will then ask you to give it a new name. If you have effects on your first title just copy it and 'Paste Attributes' to the new title.
You can also export titles as a file, and then they are available for re-use in other projects, with or without further editing, as Jeff describes.
thanks a lot for your help