The views are created through a dispatcher, accessible with M-x org-agenda, or, better, bound to a global key (see Activation). It displays a menu from which an additional letter is required to execute a command. The dispatcher offers the following default commands:
Create the calendar-like agenda (see The Weekly/Daily Agenda).
Create a list of all TODO items (see The Global TODO List).
Create a list of headlines matching a given expression (see Matching Tags and Properties).
Create a list of entries selected by a boolean expression of keywords and/or regular expressions that must or must not occur in the entry.