how do you complete the logbook: farm help milk, and abandoned town hang out with Cassie and Alissa
To Hang out with Cassie, and Alissa, do every possible action, like Bathing with Cassie, or Make out with Cassie, or Cassie, changing clothes 'For the changing clothes part do it repeatedly to activate the Scene'
Help Milk is finding all the Bulls, and Cowgirls, in New Ark Slums, Transylvania, Pixie's Hideout, Fairy Kingdom, Forest River (Fish for her) New Ark The Rock, New Ark 24 hour fitness (Workout to impress him) and travelling around New Ark, itself should show named NPCs aka Cowgirls, and Bulls.
If you don't want Bulls, or Cowgirls, there is a setting right in the Milk Farm, beside Bell.