For the next five days I'll be listing my top elemental Pokemon types, along with some in-game facts plus some of my favorite Pokemon and moves from said type.
As for in game, Fire types do double damage against Ice, Bug, Grass, and Steel type Pokemon, and take double damage from Rock, Ground, Water types. Fire types tend to be somewhat of a glass cannon; they can dish out some serious damage, but tend to be a bit on the fragile side.
Some of my favorite fire type moves are Flamethrower, Flare Blitz, and Fire Punch.
Favorite Fire type Pokemon include Infernape, Typhlosion, Chandelure, Volcarona, Emboar, the legendary Ho-oh, and my companion from the beginning, Charizard.
My very first Pokemon, Charmander, is a fire type. Perhaps that's what kindled (see what I did there?) my love for this type, and I remember wanting to give my Charizard all fire type moves (bad idea). To this day I always try to include at least one Fire Pokemon on any team I make.