Hi everyone, I just started playing today

Welcome to Astellia, it's a pleasure to meet a new traveler. You can start by exploring various games and completing simple "Quests" to accumulate gems and experience. If you encounter any confusion during your adventure, feel free to ask me, this old owl, anytime.

Just follow the main quest. If you run out of main quests, then go do side quests and explore the map.

When you pull for characters, make sure to plan it out. It's generally better to pull for newly released characters as they tend to be stronger.

You can watch guides a lot, and the story too. There are many explanations online to help you understand.