On this page of our guide to Life is Strange True Colors we've listed all of the side missions available in Episode 2.
You can head to the park immediately after leaving the bar. There, you'll find a sidequest that doesn't take long, but causes Alex' mood to improve after helping someone from the town.
There's a sad woman in the park. Check her emotions, then talk to her. She's looking for a bird she can't find.
After talking to the woman, head to the edge of the park and turn left. You'll see a big tree growing right behind the wall.
As you look at the tree, you'll spot a white bird. Now knowing its whereabouts, return to the woman. She'll be very grateful to you.
This quest can be started in the vinyl shop. You'll go there while looking for Steph.
There's a young man in the shop who's very upset about something. You need to examine his thoughts. By doing so, you'll find out he's been left by Chrissy.
Your task is very simple. Turn around and check the notice board. It turns out Chrissy is a lost dog who has already been found by someone.
Knowing this return to the man, who'll happily call the person in question.