God of the Forge is currently bugged and as soon as anyone in the game picks it, everyone gets the bonus. Some AI always picks it, it seems, so in case you are fine waiting with this bonus until that happens, you can go for some other pantheon as well. With 30-40 cities culture from pastures would be massive. You can find relics in goody huts. Luck needed to find it before meeting the first AI. The key is getting to 1 tech/turn indeed. Getting writing asap is the most important. Tech order: pottery-writing. Meeting a couple of scientific city states early for free envoys would be massive. I didn't get any of those, have 2 in the game but met them later. Once you have writing you can start chopping campuses and then it's easy to count how many you need to 1 turn techs. In retrospect, I realized I should have acquired the Great Merchants earlier for free envoys. You can get a total of 6 envoys from merchants. If you get those in addition to 2 envoys from first meeting and complete one quest, that's +6 science/campus pretty early. Buying Hypatia and libraries goes without saying, so that makes 9 science/campus, add some adjacency bonus for 10-12, boosted by Natural Philosophy to 11-15. Not many are needed for classical/early medieval techs. Education with boost costs 195 science. Once you hit that and buy unis everywhere, boosted by Newton and Einstein, the rest is easy. It's probably also a good idea to assign citizens to working the libraries as soon as the campus is built. You're in no hurry to build anything else. This is another thing I missed in my game.