Hi tblac100, thank you for trying my game.
To meet Thomas Miller just leave the town on the way to the second town, the home of Thomas is on the left, crossing tiny bridge, you can see the home from the town, easy to find. Just follow the river and you will find him on the other side of the river. Thomas is working on his home garden during the day, sometimes resting on benches (on both sides of his home) and sometimes going to work in the watermill (you can find him on the way). During nights, like every NPC in the game, he is sleeping and not reachable.
Thomas will tell you where to go to find wheat seeds, will give you access to the watermill when you have the wheat seeds, and will tell you where to find Peter Baker to use the bakehouse to make a bread when you have the flour.
I have attached a picture, just leaving Donensbourgh town, you can see on the left the house of Thomas Miller.
Let me know if you need any further help.