The easiest way to install the latest Zotero on Ubuntu is to use Flatpak. If you are on elementary OS, its really easy to install: Just head over to Zotero on Flathub, click the Install button and when your browser prompts you, select
Open with: Sideload.
Once you installed Zotero, we need to setup the library sync. To do so, start Zotero and go to
Edit > Preferences > Sync, enter your Username and Password click
Set Up Syncing.
Once you are succesfully connected, we now need to setup syncing of attachment files with your Nextcloud backend. This can be done in
Edit > Preferences > Sync as well. Just make sure you select
✓ Sync attachment files in My Library using: WebDAV and enter your Nextcloud server details in the shown form:
Make sure you use the right WebDAV URL by copying it from the Nextcloud web interface:
As last step, you want to install the Zotero Connector. It makes it easy to add interesting stuff to your library right from your web browser. For installation, visit the download page of the official Zotero website and click
PLEASE NOTE: Zotero needs to be running for the Connector to work properly.