Blooming Cora is the first town that you will enter. This is where you will complete the beginner's quests and is designed for levels 1 thru 15. You should expect to finish everything easily by level 12 or 13.
Guild Clerk Esther is the first person that you should talk to. She will have different quests for you to complete.
First she will ask you for an Entry Application. These are easy enough to find. Just go through the blue sparkly teleporter to Coral Field 1 and kill torobbies until an entry application drops to the ground.
While you are in Blooming Cora you should also talk to Marx the blacksmith. He has a tutorial and a quiz for you. Take the quiz and get 5 Bronze Gemstones. Hold onto these because they will come in handy later in the game.
You can also learn new skills by talking to the skill folks in their building on the bottom left of the map. You can sell items and buy potions to the shop on the top right of the map.