The Zotero Desktop app is the best way to access your library-it has the most functionality of the three access points.
All Zotero libraries look relatively similar, but variations come down to customization by each user. A Zotero (v. 7) library on a Mac will look something like this:
Each library will have 3 panes:
If we zoom in a bit, the navigation bar looks like this:
From left to right we see:
Once you have installed the Zotero connector and adjusted its settings, you can start importing items directly to Zotero from your browser. Depending on the metadata available, the connector will look different on different pages. Below are a few of the possibilities:
On a new tab, where there is no metadata to import, the Zotero Connector appears as a faded red "Z" icon in the navigation bar.
When an item is open in the browser, the connector displays the appropriate icon. In this case, I have a journal article open, so Zotero displays the lined page icon in the navigation bar. Clicking on the page icon will download the metadata for that item into your library, and depending on your settings, the PDF as well. You can choose which collection a saved item goes to from the drop down by selecting your preferred collection name in the "Saving to" drop-down list. If you need additional information about the file structure, select the carat to the right of the drop-down menu.
When a search in a library catalog or a database like Web of Science is open in the browser, the connector displays a file folder icon. In this case, clicking on the icon will allow you to select which items to import from a list of detected items like this:
Migrating data from other reference managers to Zotero is easy! There are several standardized reference formats like RIS, BibTeX, and CSL JSON, all of which Zotero is capable of importing. Here is a full list of bibliographic formats Zotero can import.
Generally importing a file into Zotero will go like this: