When you focus on an island in the main game screen or the sea map you can see what mineral resources are available there (stone, iron, clay, etc.) and what kind of crops you can grow (grain, spices, herbs, hemp, etc.). If you just want to produce raw materials on the island ...
“Infinite Wood”, “Infinite Tools”, “Infinite Stone”: If these items are displayed at the top left corner, they’ll take effect immediately. Otherwise, you’ll need to open any storage buildings to see the quantities change. “Infinite Resources”: Open any storage buildings to see the ...
and what kind of crops you can grow (grain, spices, herbs, hemp, etc.). If you just want to produce raw materials on the island all that's required is building the fields for crops or quarries for minerals. If you want finished goods like stone or iron for building materials, ...