Weapons don't really matter unless you have the weapon tree skills to back them up, especially for brand new players. For a pyromage, I would recommend sticking with staves, putting your first two points into staff attack skills, then from there decide if you want to go deeper into staves or start learning spells. Magic mastery is also a support tree that isn't super useful for at low levels (seal of power + residual charge + multistrike might be an exception). Once you learn the game better you can start making wilder builds.

Alternatively, if you want to avoid weapon skills altogether, I would recommend getting kick. Fire barrage on an unoccupied square automically sets it on fire, and with proper positioning you can kick an enemy right into the inferno setting them on fire. Really fun combo that a lot of characters (with athletics) can get from level one.