You woke up in year 2000 B.C.
You have unlimited supply of pen and paper,and your work will be shipped across the globe.
History facts are off-limits.
Would you be useful to the world,or just first shitposter?
Considering that any knowledge that I could impart requires 3500 years of preparation, so simce I have a basic understanding of metal working I'd forge some iron and conquer the world, then I'd just try and bang as many Neolithic bitches as possible.
An extensive english course accessible to anyone who wants to read it, and
A 4,000 page sophistry masterpiece detailing extensively the dangers of roads, metallurgy and forming communities larger than a village.