Some branches of the NYPL are now open with limited services. To get a library card, download the NYPL's free SimplyE app (for Android or iPhone) and follow the instructions during setup. Anyone who lives, works, or goes to school in NYC is eligible. Once you have an account, you can access a wide variety of online resources, including tutoring, e-books, and databases.
NYPL has select locations open for their Grab & Go services. This program allows you to request materials (like books and DVDs), though the NYPL online catalog and then pick up the materials in person. Not all branches are open, but you can request materials from any library in the system!
NYPL library card holders have access to Ancestry genealogical and historical database. While it is primarily a database for genealogical research, it also contains primary source historical records including the US Census, photographs, and maps. For access, visit the Ancestry Library Edition NYPL page, click on the "Connect to Database" link, and enter your NYPL card information.