To get Illusion Up keep casting an illusion spell preferrably Invisibility. To get sneak skill up sneak around while invisible and no one can detect you. To get Alteration up keep casting Open lock spells on doors locked or unlocked.To get Security skill up Get the skeleton key and go to a locked door and keep using auto attempt. To get Mysticism up Use Detect Life Spells over and over. To get Alchemy up get a mortar and pestle find ingredients in the wild and try to blend them.Light/Heavy armour go to the arena and kepp getting hit. Same works for Block. Keep healing yourself for Restoration. For conjuration, Summon a Skeleton and cast Turn Undead on it. For Destruction cast Fireballs at the skeleton.