Head west out of the gate and you'll see Iris. She'll stop and chat, then abruptly leave. Continue west and enter the Pokemon Center. Heal your Pokemon, stock up on items, then leave. Exploration time! Dances
Note that Route 9 , found through the gate leading west out of the City, is an optional area. Feel free to head out, explore it and train there if you want. If you do, skip ahead to it then come back to this section to continue on.
Take the path to the left of the Center north. Enter the building at the end of the path. Head up the stairs to the second floor of the building. Talk to the guy sitting at the north end of the table to receive a Float Stone . Talk to the girl sitting at the south end of the table and answer 'Yes' to her question to get a Ring Target .
Head back to the main street and continue west. When you reach the next street leading north, follow it. Then when you reach the first building that can be entered on the left side of the street, head on inside. Talk to the man on the bottom floor and he'll give you a Gift Box .
If you check back here once a day over the next three days, you'll receive a Fluffy Beard , then a Big Bag and finally a Scarlet Hat . Head back outside and continue following the street north.
At the end of the street, before it turns east, you'll find the Opelucid City Gym . You can enter this immediately, but before we do, let's check the building to its right. The woman on the first floor will give you a Smoke Ball . Exit the building. When you're ready, enter the Gym!