Fortify Skill spells temporarily bestow skills bonuses for a given duration. They will give one access to this skill type, and once it is acquired, they may then begin to make their own Fortify Skill spells. A way to get a Fortify Skill spell is to have the active effect "Fortify Skill" through enchanted apparel, and then use an Altar of Spellmaking, where one can choose the option to create a Fortify Skill spell. It is a simple process that, once understood, may easily be done.