Connect HDMI to your TV and the supplied power cable, fit the remote batteries, then follow the on-screen setup: language, network, then your service details.
Notes that matter by model:
Next step, add your server. Your provider supplies the URL, username and password, or a playlist: adding and managing servers
Setup videos for every model: buzztv.com/quick-start-guide-links/ buzztv.com/quick-start-guide-links/
Still stuck? Email cs@buzztv.com with a photo of the white label on the underside of your device, which we use for utility and system checks, and tell us what you see on screen. Support is Monday to Friday, 10:00 to 18:00 Eastern.