Chapter 1 serves as your introduction to World Exploration and basic combat. You'll primarily face weak Cake Monsters and learn the ropes of skill activation. Focus on completing the tutorial quests that guide you through these initial stages. Your starting Cookies (GingerBrave, Strawberry Cookie, Wizard Cookie, Chili Pepper Cookie, Custard Cookie III) are sufficient for these early challenges.
Prioritize leveling up your Cookies using Star Jellies obtained from stages and your Kingdom's Fountain of Abundance. equip basic Toppings if you acquire any, even if they're common rarity. The goal here is to get a feel for the combat system and understand how different Cookie roles interact.