Xenon_graves
He might want to consider grinding sword and archery skills. The zombies are very easy and numerous so it'd probably be easier to grind skills with them first before moving on to Westeros. He can also stock up on getting a couple high-grade compound bows and arrows. Stab-proof clothes maybe if he can find them. Just good clothes in general really for all weathers. One of those water-filtering canteens and antibiotics. He could also raid a bank or jewelry store for gold. I don't know what his limit is but if he can store an entire library of books then he should be able to carry off a lot of gold. Though perhaps most important of all he should remember to stock up on toilet paper, shampoos, soaps and toothpaste. No one seems to remember how filthy you can get in medieval periods.
KNOWLEDGE HE’LL NEED IT. FOR GOT 1 Cheaper but more clear quality glass masking 2 Crop rotation, Fish farming, Boat making 3 Different forms of Melee weapons, Armor 4 Glass Houses, Fruits and Vegtables, coffe beans especially Potatoes and Rice that grow well in Winter 5 Culinary Recipies, info on how to trade 6 HELP HOUSE STARK!!!!! 7 Different forms of Alcohol 8 Medical knowledge 9 How to make concrete Roads 10 Architechure and construction
List of things the MC would need for the new world : All books with science, medicine making, weapon making, cooking, vietnam traps. At least 50 Kg of gold ( if possible in small bars so people don't go crazy with him ) . Throwing knifes ( at least 20 good ones ) Fire Axe and crosbow Medkit for emergencies Salt and spices to sell ( at least 1Kg each ) Dried foot for emergencies and maybe some water. It could also be nice to bring some metal ingots if he wants to make good swords in the near future.