This tutorial covers the use of Overdrive ebooks for Linux users.
Instructions are based on Ubuntu 12.04 and a Nook Simple Touch, and instructions found online for having Adobe Digital Editions on a linux system detect the Nook. Adobe Digital Editions is installed with Wine.
Some ereaders require drivers to be installed, which may not work with Wine and may need to be installed by other means. For instance, Wine would not run Sony's Reader Library software. Depending on your distro and your device, your mileage may vary, so to speak.
This tutorial was created by a linux user, albeit a n00b. If you know of/discover better solutions than are described here, please use our contact page, select "webmaster" from the menu and submit corrections/etc directly.