decide play a game

I discussed about games with Jason who is a students in University of Calgary. He played a game named World of Warcraft. This is an online game and really popular. He wanted me to play together with him; moreover, he described some information about his games after I asked. In this game, there are 2 leagues which are alliance and horde, 9 classes which are paladin, warrior, rogue, mage, priest, hunter, shaman, warlock, druid and 10 race which are Gnome, Night Elf, Human, Dwarf and Dreanei belong alliance, Orc, Undead, Tauren, Troll and Blood Elf belong horde. During understanding these, I check vocabularies a lot from electronic dictionary and let him show me in game. I decided to start playing because I am interested in myths,