Before beginning your speedruns

Please make sure to read through the rules and understand what is allowed or banned.

Game Rules: https://www.speedrun.com/skyrim?h=Main_Quest-pc&rules=game&x=w20p7jkn-jlz36082.013x3dk1
Category Rules: https://www.speedrun.com/skyrim?h=Main_Quest-pc&rules=category&x=w20p7jkn-jlz36082.013x3dk1

Cap the frame rates.

You have to limit the FPS to 60 otherwise the game must be extremely glitchy with higher frame rates.

If you are Nvidia graphic card user, you can use its control panel to cap the frame rates.

Open NVIDIA control panel -> Manage 3D settings -> Click 'Program Settings' -> Click 'add' ->Choose 'Skyrim' -> Click 'Max Frame Rate' tab and limit to 60. Done!

Excuse me, but I don't know the option to cap the frame rates other than this way.

Join our Discord!: https://discord.gg/V34pEGm

When you can't understand what you are doing while you speedrun or practice it, the participants may help you.

Choose your race and make a start save file.

You must choose High Elf (Altmer) to gain the fastest movement speed. Sex doesn't affect on a record, probably.
Make a hard save right before getting the player's control. I recommend you open the console and type 'save start'.

Preparation is done. Let's start your speedruns!

Note: I won't treat all of the how-to glitches in this guide. Please check out these tutorials: https://www.speedrun.com/skyrim/guides/2iwv6

Also, this video should help make sense of Dead Loading/Warping:

Helgen

Do Infinite Sprint. (You need to do it each time after you sneak, unsheathe, and sprint.)
Jump on the Alduin's wing and run near the entrance of Helgen.
Quick save, run to the front of Helgen's exit and make a save there.
Quick load, enter Helgen, skip Hadvar's dialogues, and quick save. Then do Load Warping.

Shrine

FT to Helgen and run up the slope.
Grab an arrow and pick up items from a chest on the way before quick save with a third-person view.
After you run up the slope sufficiently, wait an hour and steal a horse and make a save of setting up Horse Tilting. If the rider doesn't get off, punch the horse.
Do Horse Tilting to the shrine of the Devines at Windhelm through Riverwood, Valtheim Towers, Windhelm Stables, and Hlaalu Farm. If you can't gain sufficient speed you should land on White River, and then do tilting again.
Get the blessing of the Divines by activating the shrine of it.
FT to Riverwood

Embassy

Make a save for setting up Ghost Tilting (a.k.a. Etherial Tilting) with the forge.
Do Ghost Tilting, make a hard save under High Hrothgar, and quick save under Ivarstead.
Load the quick save (DO NOT quick load. That causes a crash definitely.) and press the activate key to warp up to Throat of the World.
FT to Hlaalu Farm and make a save for setting up Ghost Tilting with the tanning rack.
Do Ghost Tilting through Septimus Signus' Outpost and Katla's Farm, and quick save and load beneath Thalmor Embassy.
Enter the embassy and take quest items.
FT to Septimus Signus' Outpost.

Karthspire

What you need to steal is only Blank Lexicon.
Keep trying to steal it until you succeed, and then quick save.
Load the save file made under High Hrothgar.
Jump off from the cliff in the courtyard to do damage yourself over 100 HP and make a save in front of the door while you are available to activate it. (DO NOT quick save while you do that.)
Quick load and do Dead Warping. (Basically, you have to press the activate key with a precise timing.)
Quick save with a third person view and do Horse Tilting.
Land on the river near Karthspire and get into it.
Jumping the puzzles to skip them and get the FT point of Sky Haven Temple.
FT to Ivarstead.

Esbern

Guard Warp to Riften. (Commit a crime, yield, and pay the fine.)
Run through Ratway.
Start the conversation with Esbern. (Talk to him and cancel. Talk to him again and choose the under conversation, and then QS and QL, wait an hour, and skip his dialogues with QS and QL. When the door is open, bump him and start to talk with him choosing all of the under conversation. When you see the subtitle 'We must go, quickly now...', bump him again, talk to him twice, and quick save.)
Do Dead Warping and FT to Riverwood.
Go to Sleeping Giant Inn and skip dialogues. (Wait an hour after entering the inn, and exit. Wait an hour again and do QS and QL 4 times, and then return to the inn. When the quest is updated go outside.)
FT to Sky Haven Temple. NOT Karthspire!!!!!!
Quick Wait 8 hours. If Esbern doesn't appear wait only an hour again.
Talk to him, choose the conversation 'How do we find the entrance to Sky Haven Temple?', and bump him.
FT to Mistveil Keep activating the Blood Seal.

Initiation

You cannot skip fade in while the player is animated.
Jump to skip the animation.
Do Vendor Glitch with Balimund.
Set up Marriage Glitch, which you can gain cutscene control while reading the Elder Scroll later.
FT back to Sky Haven Temple.
Quick Wait 21 hours and QS/QL.
Get into the temple, QS/QL, and wait an hour.
Duplicate Dragonbane.
Begin the conversation with Esbern and Delphine. Skip Esbern's dialogues twice and wait an hour. Talk to him, do QS/QL twice, and bump him. Then talk with Delphine, choose the bottom conversation twice, and quick save.
Do Dead Warping.
Start the conversation with Arngeir. (Choose the top -> the bottom -> the top -> QS/QL -> the bottom -> the mid -> the bottom.)
FT to Valtheim Towers.

Mzark

Quick save with a third person view and do Horse Tilt to the exit of Tower of Mzark through Battle-Born Farm. If you can't clip the wall of the lift, equip Dragonbane, sneak in front of the door, and do the right power attack spamming the activate key.
Solve the puzzle to get the Elder Scroll.
Do Dead Warping
Get the FT point of High Hrothgar and learn Clear Skies.
FT to Throat of the World when you see or hear the effect of obtaining a dragon soul after skipping Arngeir's dialogue.

Alduin 1

Talk to Paarthurnax, choose a conversation and cancel.
Skip the dialogues by QS/QL and his fire breathing by talking to him.
QS/QL at the same time you learn Fire Breath to skip his dialogue.
After updating the quest, equip Fire Breath and shout to him.
Begin the conversation with him. Choose the bottom -> the top -> the bottom -> the top -> the top -> the top -> the bottom -> the bottom -> QS/QL.
After the quest marker on Paarthurnax is away, read the Elder Scroll.
Just before getting into the cutscene, spam quick save and quick wait until around 6 a.m. (If you've gotten along until this section you need to quick wait 17 or 18 hours probably.)
Kill the dragon and FT to Battle-Born Farm.
Do Guard Warp to Dragonsreach.
Skip the jarl and others' conversations. (Talk to Balgruuf, choose the top then the bottom, and cancel. After cancelling to be talked to by Irileth, attack someone and yield. Cancel the conversation right after paying the fine.)
FT to High Hrothgar and then FT to Throat of the World.
Learn Dragonrend. (No problem if the letters and the sound effects that appear when you learn some shout aren't displayed.)
FT to High Hrothgar after you hear Alduin's dialogue 'Nivahriin joorre!'
FT back to Throat of the World.
Kill Gormleith and skip the others' dialogue by talking to them.
FT to Dragonsreach when you see the subtitle 'Faal Kel...?! Nikriinne...'
Talk to Farengar and proceed with the conversation until his subtitle 'I, ah learned of a certain stone tablet...' appears.
Equip Dragonrend and register it and the others to favourites before binding the number key to them to change the shout you equip immediately.
Shout to Alduin
Move near a certain rock. (Please check someone's recent record.)
Beat first Alduin's fight with Infinite Power Attacks.
QS/QL their dialogues, but you can't skip 'Meyz mul. Dovahkiin. You have become strong.'
Skip the next one, QS/QL 3 times and talk to Paarthurnax. Choose the bottom and cancel. (If he lands on the air not the precise cliff, FT to High Hrothgar and FT back to Throat of the World. Then he's on the word wall.)
FT to Dragonsreach.

Council

Have a conversation with Balgruuf. Choose the top and the ones other than persuasion. Proceed until click 'What if you didn't have to worry about an enemy attack?'
Do Dead Warping. At this point, you can succeed in it just by spamming the activate key.
Carry on the conversation with Arngeir.
FT to Katla's Farm and do Guard Warp to Castle Dour
Make the conversation with Tullius. Choose the bottom twice and close the dialogue when you see the subtitle 'I suspect we might have use for someone resourceful...', and then QS/QL and talk with him again. Choose the top -> the bottom -> the top -> cancel.
FT to Windhelm Stables.
Do Horse Tilting to Palace of the Kings. If you feel it's risky, you can choose the Guard Warp.
Talk with Ulfric. Cancel just after talking to him and talk to him again. Choose the top and the ones other than persuasion.
QS/QL before doing Dead Warping otherwise he doesn't come out in the council.
Get inside High Hrothgar.
Take your seat and wait an hour standing up. Then you'll be talked to by Arngeir, so choose the top and close the dialogue.
Skip dialogues with QS/QL 3 times or so and wait an hour. Continue to skip them.
You will be talked to by Ulfric after Arngeir says 'Perhaps this would be a good time...' Choose the bottom twice and cancel.
You can't skip this Tullius' dialogue 'First, let's be clear. This council wasn't my idea. I think it's a waste of time.' after 'Enough!'
Just press the tab when you are talked to by Tulius. DO NOT choose the bottom conversation!
Wait an hour after you skip Delphine's dialogue 'And I advise you both to listen to what he has to say, before you do anything rash.'
Wait an hour again after you skip Esbern's dialogue 'Alduin has returned! The World-Eater! Even now, he devours the souls of your fallen comrades!'
Wait an hour further after you skip Esbern's dialogue 'Can you not put aside your hatred for even one moment in the face of this mortal danger?'
Wait an hour furthermore after you skip Ulfric's dialogue 'If he's right about Alduin... we both have just as much to lose here, Tullius, remember that.'
You'll be talked to by Ulfric after skipping his dialogue 'It seems I have no choice but to let the Dragonborn decide. Although I'm starting to doubt your fairness.' Choose the top and cancel.
You can't skip this Arngeir's dialogue 'The Stormcloaks will withdraw from the Rift, allowing Imperial troops unhindered access.'
Have a conversation with Esbern. Choose the top and skip one dialogue, and then close and QS/QL. Talk to him again and proceed until the dialogue 'Od - Ah - Viing...' appears.
Go outside and FT to Dragonsreach.

Odahviing

Equip Call Dragon.
Talk with Balgruuf. Choose the top -> the bottom -> cancel -> QS/QL -> Shout (fully charged)
After the quest is updated, wait an hour, QS/QL, and open the door to the great porch holding the shout key or button.
If the guard who should be killed by the dragon is alive, you must finish him otherwise the dragon will try to kill him again. It has to be a huge time-loss.
When the dragon approaches you, get back inside and go outside again. Then you can skip the animation that the dragon is captured.
Make a conversation with him. Choose the top -> the top -> the bottom -> the top -> cancel -> QS/QL.
Wait an hour after unbound him.
Talk to him and choose the top, and then FT somewhere. You can skip the animation to departure to Skuldafn by doing so.

Skuldafn

Do Horse Tilting to the gate of Sovngarde.

Alduin 2

Run down the stairs.
Quick save with a third person view when you are at the same height as the bridge.
Do Horse Tilting to the front of Tsun.
Beat Tsun.
Do Horse Tilting to the top right door of Hall of Valor.
Start the heroes' conversations.
Repeat exiting and entering twice, and then QS/QL until the heroes get outside. Enter and exit it again.
Do Horse Tilting to the heroes.
Shout Clear Skies and skip their dialogues. Repeat that 3 times.
When you shout it lastly, climb the left side of the hill and see the south direction.
Shout Dragonrend to Alduin when the quest marker is changed.
Become a DRAGON SLAYER.