Thank you for help. Atack speed is very optimal, if you are afk farming. Why? Becuse, Nasus doesn't scales AD, and he have high base damage. In addition, atack speed scales realy well with machete. You can buy what do you want as last item. Thats why I write my opinion about all items at first. I recomend Spirit of the Anceint Golem, almost allways if you don't have 40% CDR.

I need to downvote your guide, reason mentioned by emoriam: too much content is copied from Nate's guide, and remember this: you can't fool us with unauthentic content. For instance the illustrations: just screenshot your own games, it won't even be hard.

There are many spelling/grammatical errors such as "live steal" and "discusting", which you should note for and please eliminate them as some readers like me hates it.

Laning with Spirit of the Ancient Golem is not viable, even when you buy it as the 5th or 6th item, it is still weaker than most defensive items.

You do not have any sections about your item build, just notes for your items. Which are not pleasing to read, I would say.

Sooo many cheat sheets and every single one is way too long. Instead of splitting every single build into early-, mid- and late-game purchases you can maybe just mention essential items against either AD or AP and then present example full builds. Disscussions about items are part of an additional chapter, it's way to messed up to talk about such things in the notes and it makes the cheat sheet look more appealing. Spirit of the Ancient Golem is never an option when playing in lane + Attack Speed Runes are suboptimal.

And now the fact why I will downvote your guide: You copied (with minor changes) content from this guide - for instance this chapter.