As a child, Zoro trained at a dojo in Shimotsuki Village. Zoro stated in the *Baratie, that, "Once he decided that he would become an invincible swordsman, he left his life behind"
Zoro now has many abilities with the ability to distort himself making it look like he has more than two arms. Some of his moves include:
1080 Pound Cannon
Extreme Tiger Hunt
Purgatory Demon Slash
Kalasutra: Great Dragon Twister
Three Swords Style Secret Technique: Crossing of Six Paths