when you has enough money to buy the island (i think its 10k?) he will greet you at the door asking wether you want to buy it i hope this helps you!
save flowers in your cabinet and give the harvest goddess flowers for each season.
milk
You have to gain enough affection with her. To do that talk to her and give her gifts she likes.
Upgrade your barn and taro will give you one.
Upgrade your barn then taro will give you one.
Give the cafe owner milk and she'll give you the recipe.
On fridays give them food that you have cooked.
Upgrade your animal barn then Taro will give you one.
Upgrade your animal barn then taro will give you one.
When you give Thomas the item he requests on Winter 2cnd He will give you 1 (one) Gold Lumber Piece. Which you can use for making buildings, such as barns and sheds.
Give the guy with the horns the honey and use the secret entrance.
When the Cafe and diner are in town give them an item in front of the counter and they will make something and give you the recipe