Spell caster class with spell caster Archetype wizard/witch difficulty
 

I am trying to figure the system out and need some help. I have made a 2nd lvl wizard, with free Archytype of Witch. I have filled out all the wizards spells, but am unable to memorize my 1 witch cantrip. Need help on how do you manage 2 spell casters when you choose an archetype spell caster. Thanks.

You should have a familiar under your spell books. You need to choose the cantrips you get there before you can prepare one.