Part 1: Just started — no badges

Just started — no badges opens 5 areas.

Where to go

1. Aspertia City

   Wild: Basculin 100% · Lv 5-15, Goldeen 60% · Lv 40-70, Seaking 20% · Lv 50-70, Oshawott Lv 5 +2 more

2. Floccesy Ranch

   Wild: Audino 90% · Lv 4-7, Basculin 70% · Lv 5-15, Poliwag 60% · Lv 40-70, Poliwhirl 55% · Lv 40-70 +12 more

3. Route 19

   Wild: Basculin 100% · Lv 5-15, Patrat 100% · Lv 2-4, Poliwag 60% · Lv 40-70, Poliwhirl 55% · Lv 40-70 +2 more

4. Route 20

   Wild: Audino 90% · Lv 2-4, Basculin 70% · Lv 5-15, Poliwag 60% · Lv 40-70, Poliwhirl 55% · Lv 40-70 +11 more

5. Floccesy Town

   Wild: Dratini Lv 1, Gible Lv 1

Everything you can have caught by this checkpoint · Open the interactive guide

It also doesn't say when 5 of its areas open up, so they are listed together in the last part rather than guessed into the story.