There are 5 basic guilds in Algoron. The Warriors Guild is for giving people of all races the basic training in the art of fighting. This includes many skills and even some basic spells if the person chooses to learn them.
Warriors are big and strong and the best fighters of all of the basic four guilds.
The Thieves Guild allows almost any race inside for training. They don't general allow Giant Ogres due to their enormous size and lack of stealth. This guild trains people in the art of lock picking, stealing, and moving with great stealth. They make good fighters due to their backstabbing styles and they can even learn some basic magical skills. The Mages Guild teaches people of all races, except Kender, magic.