You can watch select episodes of certain shows on-demand for free without any kind of registration required. However, there’s no hard-and-fast rule: some shows have the latest episode freely available, while others only allow you to watch every second episode.
To unlock all of TLC’s on-demand content, as well as its live stream, you’ll have to sign in with your cable provider details. If you don’t have cable TV, you can still watch as long as you have a PlayStation Vue subscription. These start at $44.99 USD per month and come with a five-day free trial.