How to Level Up FAST in Skyrim (EVERY METHOD)

One trick i use, although slower, is casting any of the Alteration Flesh spells, then stand in front of the beam of light in Meridia's temple. It actively gives exp per hit, and that beam hits a lot.
I will add that i use the mod Invested Magicka, which may change how they work, but could be interesting

You forgot one absolutely broken provided you have around 600 magicka. First level up your illusion with the muffle spell method to 90. At that point, do the master illusion quest at the college to get the harmony spell. Then go to a crowded place like an inn and just spam the spell. Your level will skyrocket. For instance, with a dozen people around you and your illusion back at level 15 (when you make the skill legendary), just ONE harmony spell gets your illusion in the level 40's. It's absolutely insane, it took me like 10 min for my character to grow by 30 levels. And if you don't have enough magicka, use the spell call to arms, it makes you grow a little slower but costs less.

Whoa! Speak for yourself bud, smithing was my favorite activity for my first 5 characters. Mind you, I was disappointed the lumber mill didn’t have a quest line…

Smithing+Alchemy+Enchanting:
Raise Enchanting 30+ & Alchemy 40+(buy Perks). Then make +%Alchemy gear (early +12%Alchemy necklace from an alchemist Quest & Falmer masks can be worn with crowns for an extra Enchantment slot). Trade the potions you make, for the training you need.
(Salmon Roe + Garlic + Nordic Barnicles 30ish each, is a very good way to get started, these potions are absurdly valuable.) (save 1 of each for the end for instant 100 Alchemy.)
Next: Restoration Potions Glitch (these potions improve +%armour benefits -- Remove armour, Drink Resto potion, Get Dressed, make Resto Potion, Repeat.) Then make whatever potions you can. This will power level Alchemy to about 80 fast. (Fish barrels in Riften are fantastic for Resto ingredients)
Make +%Enchant potions along the way, to make better +%Alchemy gear. (Takes about +50% Alchemy Gear at level 40ish to achieve the cascading Resto-Potion +% effect)
Now you are rich, your Alchemy is maxed... Make one more insanely high Restoration Potion, to make 1 ridiculous Smithy Potion (GlowShroom+Blisterwart). Make 1 lowly dagger. Drink 100000%+ Smithy Potion, Sharpen Dagger to Insane. Congrats on 100 Smithing.
Enchant dagger with Soultrap 1 second. Get a bunch of Gems, insta-kill Giants, People, whatever, get enchanting to 100.
Enchant->Alchemy->Enchant->Alchemy->Smithy->Enchant

Use the restoration loop to level alchemy, make a ring that buffs your alchemy and smithing by around 100,000%, create daggers that do a ton of damage to instantly level smithing, sell what’s left to level speech, repeat.

I've found that the soul trap exploit works on corpses as well.

Use restoration glitch to build an infinite health ring, equip 2 heavy armor and 2 light armor pieces on your set, get a shield, fortify a sword to make 1.000.000 damage and give it to a useless companion
Bring your companion to an isolated place, and attack him until he start to attack you back .... with the God's sword of Rodd Toward
Each hit will bring you instantaneous level 100 in ligh, heavy armor and block
Then, keep reseting your skills and let your "friend" helping you leveling up

Cool

Where do I get the unbounded treating spell?

The levelers tower mod lets you level up in 3 minutes.

Okay everybody ... Still playing Skyrim here, ... Quick question... On the Smithing speed level trick... Which is faster?
A. The Iron Dagger exploit.
B. The Transmute / Jewelry exploit.
C. Just smithing building materials, which seems to level up smithing quickly as well.
* Before answering, Please note, I asked which levels Smithing fastest, NOT which makes the most money. *
* Also keep in mind, I am playing Anniversary Edition, DG, HF, etc. But NO MODS. & Have no interest in cheat mods.*

Why not just use console commands, you are cheating anyways. For PC ofc..