Help getting started with Roku devices, including setup, connecting your device to your TV, linking a Roku device to your account at my.roku.com/link, adding channels, subscribing to services, and more.
Just remember that some (most/all) cable companies will require an external cable box to view the majority of the programming offered. While most TVs today can tune "cable" channels, they can only do so if the channel is not encrypted. Only a cable box can decrypt those channels. But for OTA stations, no problem.
Dan Ultra (4640), Ultra (4670), Ultra (4800), Premiere (3920), Insignia 720p Roku TV, Sharp 4K Roku TV, Nvidia Shield, Windows 10 Pro x64 running Serviio and Plex on a wired Gigabit network.