After launching Fantastical 2 for the first time, you'll be walked through using a gesture to expand and collapse the week view into the month view. The colored dots on a date represent events for your various calendars.
Fantastical 2 has a long list of settings within the app. You can alter which maps app opens when getting directions, add an alert badge indicating various events and situations, and change themes, to name just a few.
The main part of a calendar is the management of your schedule through events. Adding an event to your calendar is simple. Type the details as you would normally speak it to someone else and Fantastical 2 will enter it for you.
Having location data for your next appointment readily available on your calendar can save you time and frustration. Fantastical 2 not only automatically maps your appointment if you enter the name of the location, but it allows you to launch into navigation directly from within the app.