Are there any unlock spells in Skyrim

I've found the best way to make money is pick up ingredients in the wild, make potions and sell them.

Easy to find

Wild ingredients are easy to find. Or you can buy ingredients from many vendors. Avoid buying expensive ingredients like void salts, fire salts, daedra hearts etc. The return isn't worth the cost.

They're light

Most ingredients weigh little. If you make a lot of potions and can't sell them all, the potions also don't weigh a lot - 100 potions weigh about the same as 1 piece of heavy armor. Their value/weight ratio is high.

They sell for a lot

I regularly sell a 0.1 weight potion for $200. There are other items with higher value/weight ratios, but I can quickly make 10 of these with ingredients that aren't hard to find. This works best for invisibility, because you can sell it for squillions. I've made around 20k mostly from potions.

I have seen potions with values in the thousands!

It's good for your alchemy skill

It'll also help your alchemy skill, and as your alchemy skill gets higher, you'll make more valuable potions.

You'll always have potions

There's nothing worse than getting into a battle without the right potions. Having a few spare potions for health and magika on hand will help you a lot!

Win win win!

Clothing is much faster than any armor. Weapons sheathed makes you run faster, and sneak rolling is actually slower than sprinting in light armor. I'm not sure about heavy armor, but I believe rolling is always the same speed. I believe carry weight has a small effect on move speed, so it might be fastest after selling off... I mean DONATING your Dwemer artifacts to a... ahem... MUSEUM.