There are several ways to find Expert Playlists on the O´Reilly platform. You can browse Playlist by topics. You can search the database, on the result list use the Formats drop down menu, select Expert and then click Select Formats.
Expert Playlists are the same type of playlist you can create yourself. You can follow an Expert Playlist by clicking the 2) Follow button, and it will be put on your personal playlist page together with your other Playlists.