Just click the "Watch" button to get taken to the TV show's main page, where you'll see a description of the show, as well as a section showing the Latest Free Episodes, if that particular show is available to watch online for free.
Once you select a particular episode you will be presented with all the different viewing options - if the toggle bar is set to display "All" content, rather than just "Free" content only, you'll see every possible viewing option. This will include free and premium content sources, as well as those which require a separate subscription in order to watch.
Channels > TV
To find even more available TV shows you can always check out our Channels section as well. Once you select the Channels > TV, you'll see a number of TV channel categories for "All TV", "Broadcast Networks" and more. Just note that these channels often include compilations of TV show clips and not full episodes.