Upon entering Floccesy Town, you'll be greeted by Alder, the former Champion of the Unova region. He'll offer some advice and encourage you on your journey. After this encounter, head west to Floccesy Ranch. Here, you'll meet the Ranch owners who are distressed because one of their Herdier has gone missing. This initiates your first mini-quest.
Explore Floccesy Ranch thoroughly. You'll find several trainers to battle, which is excellent for gaining experience. The wild Pokémon here include Lillipup, Mareep, and Riolu (rarely). Riolu is a fantastic Fighting-type Pokémon that evolves into Lucario, so try to catch one if you can! As you explore, you'll eventually find the missing Herdier being harassed by a Team Plasma Grunt. This is your first encounter with the villainous organization.