Let’s get started with the runes: You essentially got 3 variations of the same runepage (conqueror – resolve). You can definitely merge those and then mention that stat shards depend on the enemy laner, take Overgrowth over Demolish in hard lanes/skill matchups and that you can also replace Legend: Alacrity with Legend: Tenacity. (When though? When the enemy team has a lot of CC?).
I would only put information that is strictly necessary in the notes. In the note of your S10 page you spend a great deal of text on saying that Conqueror is amazing on Yorick. If you really want to say that, just use those 5 words ;)

You did a really good job of cleaning up the notes of your core items. (Forgot a . between ‘after’ and ‘This’ in core 1). You also mention that you can get either Sanguine Blade first or Trinity Force. When do you get which item first?

Before you rewrote the note of Sterak's Gage, you mentioned that you consider it to be a core item, that part is now gone. If you still consider it to be a core item, I would simply put it into the Core blocks. If you want to keep it as a single block, that’s fine but you should look to decrease the length of the title.

You got 4 MR items, starting with the notes of Adaptive Helm, Spirit Visage and Wit's End: Right now you basically ramble a bit about when to get SV/adaptive as well as mentioning the stats Wit's End gives without an explanation when you get that item. I would talk about when to get Adaptive Helm first, then mention that if those conditions do not apply, get Spirit Visage. Lastly, add an explanation of when to build Wit's End, this also applies to Hexdrinker.

Overall you improved most of the notes a lot (don’t forget the armor items notes tho). However, there are two core builds in the middle of your example builds. Either put those at the top with the rest of the core builds or delete them.
PsiGuard already covered a lot of stuff I would have said here. On the chapter order, like he said, it is a bit arbitrary… It is common to start with introducing yourself as it gives people an idea of whether they can trust this guide. However, there are some guides with introductions at the end so its up to you. The positioning of Why Yorick & Abilities are correct but the runes & items should definitely be moved before the gameplay chapters.

You already started making tiny improvements to the presentation. I noticed that the gif in the “splitpushing basics” spoiler isn’t working. I also see you tried to make a spoiler in a spoiler, but unfortunately that doesn’t really work since opening the first spoiler will also open all the spoilers within.

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1. I wouldn't bother having 4 rune pages for small substitutions. Just use the most common page and mention possible substitutions in the notes (and in the guide). The vast majority of people will only look at the first page anyway.
   
   
2. If you think Conqueror is too good to pass up, I'd leave out the Grasp of the Undying page.
   
   
3. I'm a bit confused on your triforce cdr page. If you're sacking your early game with scaling CDR and Transcendence, wouldn't you want Gathering Storm? Nullifying Orb seems like a strange choice. If you're confident enough to lane without early game runes, I'd think you'd get more out of Gathering Storm.
   
   
4. The notes on this page are also really long. It's best if you keep the stuff in the cheatsheet brief and leave the detailed information for the body of the guide.
   
   
5. Possible Core 1 notes are phrased very confusingly. Might want to rewrite those notes, and use commas.
   
   
6. Possible Core 2 notes should state when to build Cleaver, not just that it's viable. Are you building it to shred tanks? Do you build it for HP when behind? When your team has no frontline and you have to soak damage in team fights?
   
   
7. Possible Core 3 notes are needlessly long. You can just say "Build this if you're not snowballing early."
   
   
8. Sterak's notes are similarly wordy and confusing. Just say when to build it. The cheatsheet is for quick reference, so you don't want to make it difficult to parse. I would check your other Notes in the cheatsheet to see if you can trim them down since a lot of them are too long or too rambley.
   
   
9. Your MR notes state when to build Adaptive Helm, but it's unclear which of the other MR items you would build and when you'd build them.
   
   
10. Armor items Notes need more clarity as well. Just state when you should build each. Something like GA = snowballing, Randuin's = anti-crit, Dead Man's = splitpushing or something to that effect.
    
    
11. Other Damage Items notes are too long to be useful. It might be better to break these up into their own sections with quick, useful titles. That, or just save the explanation for the guide itself if the items are situational and should rarely be built.
    
    
12. Vision Matters notes contain stuff that should be in the guide rather than the cheatsheet. It would be better to state when to build pink wards and when to place early trinkets, in as brief a description as possible.
    
    
13. I'd recommend adding at least 1 more example build for a more standard bruiser setup. Right now you say Sanguine is only for snowballing, but it's also your only example build.

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1. Gnar: Isn't this matchup favorable for Yorick, or at least close? You have great tools for dealing with ranged champions without fully committing to fights. Seems like he'd be an Even threat at best.
   
   
2. I appreciate that you have a ton of matchups here, but I question whether certain champions like Jinx and Kai'Sa are really necessary to include. I'd stick to champions your readers are likely to face in top lane.
   
   
3. It'd be cool to add a few synergies here. You don't have to go as hardcore as you did on matchups, but pointing out a few great junglers or team fight champions that work well with Yorick would be a nifty addition to your cheatsheet.

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1. Your biggest issues here are a LOT of spelling errors and overall your guide is basically a wall of text. Even if the information is great, a lot of people won't want to read through it all. Even school textbooks use images, graphs and other visual aids to make it easier to stay engaged with the material. I think improving your presentation would go a long way towards helping more people master Yorick.
   
   
2. To get you started, check out the official BBCode Guide for lots of information on different ways you can improve your guide's visuals with coding. You can also go to jhoijhoi's Making a Guide for more examples and templates you can use freely.
   
   
3. If your spelling isn't the greatest or you're not too familiar with English, it might be helpful to get someone you trust to proofread your guide and help you fix up the spelling and grammar errors. The more readable your guide is, the more people will learn from it.
   
   
4. The chapter topics you have in the guide are useful for organizing information, though the order seems a little arbitrary. It might be beneficial for you to emulate another top guide in how they arrange their information to get a better flow from one subject to the next. For example, the Why Yorick chapter seems like it belongs near the beginning of the guide, since it serves as an introduction to the champion.
   
   
5. I'd stay away from colored text, especially when it's colored in large chunks. Your use of large, bold text as subheaders is very effective, but the colored text can be a little offputting. You can check out the resources I linked earlier for some alternative methods of breaking up or highlighting information rather than using different colors.

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1. Some of the info in here is actually really good, though some of the presentation issues I mentioned in the section above don't let it shine as much as it should. I'm glad to see such detailed info on split-pushing, rotating, grouping and managing minion waves in a Yorick guide.
   
   
2. I'd love to see some of the more detailed notes in your cheatsheet to get moved into an Items chapter in the guide proper. You talk a little bit about Sanguine and Iceborn, but this would be a good opportunity to get all your item knowledge out in one spot.
   
   
3. You have a lot of great macro tips in the guide, but beginner Yorick players are going to make micro mistakes too. A section on Yorick's abilities and combos would be beneficial in this regard. Tips like when to summon ghouls vs when to hold onto them until you land E, or how to reliably use W to trap enemies you're comboing or escape ganks would be great additions. I'm sure you can think of even more.
   
   
4. This is more of a long-term goal, but I also think making a matchups section in your guide would be useful. I find it easier to read through matchups in full when I have the wider format with the opportunity for images and other uses of BBCode. The cheatsheet is still useful for matchups, but it's more for quick reference rather than being suited to thorough reading. This is a lower priority issue, but I figure it wouldn't hurt to mention it as an idea. :)