Not sure how accurate my memory of the modern world map would be for that far back but depending on “where I spawned in” I would try and migrate to like ideal farmland or somewhere I know is good to build up.

If I was near Iberia I’d probably try for Cordoba… Western America, I’d go for San Francisco or anywhere near Lake Tulare… I’m sure there’s more than I am remembering right now.

I wouldn’t have to worry about organized religion having immense crusades and could carve out a little kingdom.

Try to make a modest “fortress” out of ashlar blocks or anything I can make primitively. Try to find a way to record as much “hints” towards technological progress for my descendants to follow.

Fertilizer, Germs, Animal Husbandry, Public Works (Dams), Canning, Gunpowder (not idea of gun just explosives, but they’ll probably weaponize it), steam power, oil, electricity, refrigeratation, concept of computers.

It’ll probably just have to be drawings but if I can find a cool gal and learn her language enough to roll with it then it’ll just have to be that, No point in writing it in English.

If I can actually get to the point of building a steam/wobbler engine that would probably be my life goal.

Throw in ancient technologies that are cool like Yakchals(?) and what not to actually survive to that point.

Get a little area where I would actually want to live.

Carve out mountains to channel water to more areas, basically accelerate what Egypt is doing to spread the green lush from the Nile River.

Make ideal spots for some cities, get a lot of gold out of the ground to prepare to buy the land

Pour all the foundations of the buildings, build lines of rails for public transit and trains. Make sewer system and areas to transport water

Just make it super easier for people to come and build/live there, and if I own it all I can avoid big corporations coming and pushing out growing businesses