Element 13 to Elements 2018

BobVS  wrote I have element 13 installed and have just purchased the upgrade to the 2018 version. What do I do next? Do I first need to uninstall Elements 13 before installing the 2018 version?

See that other post from today:

Elements 15 to Elements 2018

You don't need to uninstall PSE13.

Elements 2018 will be installed along with PSE 13. The PSE13 current catalog will be converted to the new format. If you have several catalogs, use the organizer menu File >> Manage catalogs to convert them any time you want.

If you prefer to uninstall PSE13, no catalog is deleted.

It is advised to deactivate the license for PSE13 before uninstalling to keep it available for another computer. Menu Help >> Sign out (or deactivate).