With Zotero, you can only have one library on your desktop and one library per online account. Generally, if you want to sync your desktop and online libraries, this will mean that you only have one Zotero library. This differs from some other citation managers, such as EndNote, which allow you to create multiple libraries. However, items in your Zotero library can still be organized on a more granular level; see the Organizing References section of this guide to learn more about how to do this.
You should store your Zotero library on your hardrive, not on the cloud or in a shared drive. Setting up a Zotero account will allow you to sync your library and store the information on Zotero's servers. While your library should not be stored in a cloud storage service such as OneDrive, Google Drive, etc., full-text PDFs associated with items in your library may be. See the Managing PDFs and Maximizing Storage Space with ZotFile section of this guide for more information on storing PDFs separately from your Zotero library.
There are several ways to add references to your Zotero library:
In Zotero, you can only have one library. This differs from some other citation managers--such as EndNote--where you can have different libraries for different projects, classes, etc. While you can only have a single library in Zotero, you can organize that library using collections, subcollections, and tags.
If you have added references to your library without a full-text PDF and you don't already have that PDF saved somewhere, Zotero can sometimes find and attach one. Zotero will not be able to find every PDF you ask it to--and in those cases you will have to find and manually attach one--but it can save you time by finding some of them.
To have Zotero look for PDFs for you, select the item or items for which you want to attach a PDF, right click, and select Find Available PDF. If Zotero can locate a PDF for that reference, it will attach it.
Even if Zotero doesn't find a PDF for you, it can still help you see if our library provides access to it! The first time you want Zotero to check the library's collection and subscriptions for an item, go to Edit > Preferences > Advanced. Under "OpenURL," paste the following link into the field labeled "Resolver": https://pitt.primo.exlibrisgroup.com/openurl/01PITT_INST/01PITT_INST:01PITT_INST?sid=
Now, whenever you want to look an item up in Pitt's library system, you can elect the item in your library that you wish to find full-text for, and then click on the green arrow near the top right of the Zotero window. From the drop-down menu that appears, select Library Look-Up. If we provide access to that item, you will be taken to a listing for that item in PittCat, and from there you can see where the full-text is available. If the library doesn't provide access to that item, then you may need to use Document Delivery to get it.
ZotFile is a third-party plugin that can help you manage your attachments. If you are using the free version of Zotero, which limits your storage within Zotero to 300MB, ZotFile may be very useful to you. You can set ZotFile up to automatically link full-text PDFs of articles to references in your library while storing the PDFs separately; this way, the PDFs will not be taking up any of your 300MB of storage. References on their own take up very little space, so 300MB becomes a reasonable storage limit once there are not PDFs using up the storage space. You can still access these PDFs from your Zotero library, but instead of opening within Zotero, the PDFs will open in your default PDF-reader.
Next, you will need to choose a cloud storage service with which you would like to store your PDFs. Using a cloud storage service ensures that you will be able to access full-texts of items in your Zotero library from anywhere.
Then you need to create a new folder within the app's syncing folder on your desktop. Your PDFs for your Zotero library will live here, so name it accordingly.
Now, go to Zotero and open Tools > ZotFile Preferences. Under the General Settings tab, there will be an empty bar labeled as "Source Folder for Attaching New Files." You will most likely want to choose your downloads folder for this (e.g., C:\Users\name\Downloads).
Below that, there are options for "Location of Files." Select the radio button by "Custom Location." Then, choose the folder that you created in the syncing app for your Zotero PDFs.
You're almost done! But, first you need to adjust your sync settings in Zotero so that the PDFs are not automatically added to your Zotero online library (because if they are then they will count towards your 300MB of free storage). To do this, go to Edit > Preferences > Sync. Then deselect "Sync attachment files in My Library using Zotero." This way, your references will still sync with your Zotero web library, but your full-text PDFs will sync with the cloud service you have selected.
If you download an app on your mobile phone or tablet for the cloud storage service that you chose above, you will also be able to access your PDFs on that device.
An important thing to note about this method is that when you are using your Zotero Web Library, you will not be able to directly access your full-text documents from there. You will need to go to the website for your cloud storage provider (Box, OneDrive, etc.) to view them.
ZotFile can do other things as well, from automatically renaming PDFs according to rules of your choosing to extracting highlighted text from PDFs. Other ZotFile tutorials include:
Zotero automatically checks your library for items that have been retracted through an integration with Retraction Watch. Retraction Watch maintains a database of retracted articles, so if you add an item to your library that has already been retracted or an item already in your library gets retracted, you will receive a notification in Zotero.
Retraction Watch is a nonprofit organization (just like Zotero!), and there may be some time between an item being retracted and its addition to the Retraction Watch database. Therefore, you might not be notified in Zotero to an item's retraction until several weeks after the item has been retracted.