hey there. I have a question .I use magic and level up in perks. Lets pick flames . Do i have to buy another flames spell when i get higher that has more power to burn or does it automatic
level up with me. I read on the forum something about it and it made me confused a bit

As you level up your Destruction skill, you can buy more Spell Books and of course the damage output gets higher. Ex: (Flames > Firebolt > Fireball > Incinerate > Firestorm). Go to the College of Winterhold and you'll find more traders that can sell Spell Books.