Help To Start

What is the best class of the game?
What is the best way to level up?
Are the city shops good for buy armor and weapons?

 

1) There is no best class
2) Grinding and quests
3) It's up to you if you think they're good or not (all depends on your build)

 

The best class is the class you think is best, there is no best class.
The best way to level up is to either do quests or just grind, you can look on wynncraft wiki to find the best places to grind for your levels
you usually get better armour by killing mobs but you can buy armour and weapons from the shop if you wish

 

The best Class of All is the MAGE!

Spoiler

Its actually what you think you want to be.
Assassin is for Damage.
Mage is for support.
Archer is for SANIC SPEED and mobility
and Warrior is for being a tanky turtle and nearly takes no damage.
so choose, I'm sure its the wrong order

 

All classes have up and down sides, mage is fairly tough and resilient, plus great support, but isn't really good at sustained damage unless specific build and later spells. warrior is tacky as all shite, and decent damage, but tougher to deal with range enemies that deal lots of knock back, plus have to get in close so more damage taken. Assassin same ranged problem, but has spells that help, and deals huge damage if used right, but is basically made of paper. Archer also paper, but deals big damage, and has okay mobility with some spells, but bad in close spaces like some boss arenas and other places, until the later bomb-arrow upgrades.

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grinding spots are basically any place with LOTS of enemies, some of the better places are the ones that are accessible as a quest reward. As for the armor shops, they can do in a pinch, but not recommended for later levels, I still used a fair bit of shop armor till lower 40s, cu I had really bad drop luck

 

If you're low budget and buy things often, go mage. The heal is free.
Best way to levelup? Do quests with friends, it'll get done quicker.
They're fairly decent, and I recommend them only if the city and you are nearly the same level. Otherwise buy from others.