CF: Cantrips, Prepared

You learn to cast a number of cantrips equal to Half-Proficiency + 3, from your spell lists.
You may also prepare Cantrips from your spell lists, provided they are either written down somewhere you can access them (like a spell book) or are on a spell list you always have access to (such as with the Cleric and the Druid).
You prepare spells by doing the 'Preparing Your Spells' Activity