Vesure Town is the first town you will come across. Here you can buy more Pokeballs and heal your Pokemon. Look in the buildings and see if you can get any items from the villagers.

Buildings

House 1-Talk to villagers. Post a thread.
House 2-Talk to villagers. Post a thread.
Pokemon Center- Heal your Pokemon and talk to the villagers that are inside. Post a thread to heal your Pokemon down at the bottom.
PokeMart- Buy Pokeballs, potions, and more. Go to the link.
Fisherman Guru's House- Go inside and talk to the guy to get tips on fishing, and maybe receive a small prize... Post a thread.
Berry Master-Talk to the Master to receive berries for your Pokemon to use. Post a thread.

Vesure Town is known for its generosity to beginning trainers. They will give you helpful information, berries, and other helpful and important items that are vital to your journey. But once you get everything you can from this place, you might want to continue onto Route 102.