Final answer:
Guests can view a list of tap beers on a beer menu, chalkboards, digital screens, or by inquiring with the staff at the establishment. The selection might change often, so it is also recommended to ask staff for the latest offerings.
Step-by-step explanation:
If a guest wants to view a list of all the tap beers available, they can typically find this information in several locations within a restaurant or bar setting. The most common places to look for a tap beer list would be on a beer menu, displayed on either a physical menu provided by the staff, on chalkboards or digital screens strategically placed around the establishment, or sometimes within a venue's app or website if they offer such features. Guests can also directly ask the staff for recommendations or for the most updated list, as tap selections might change frequently due to availability or seasonal offerings.