"Ideas" act as blueprints for building and crafting. Once you know the recipe, you don't need the Idea card to perform the action.
Sell resources to gain coins, which are then used to buy Booster Packs . These packs contain new cards, "Ideas" (blueprints), and even more villagers. Stacklands
At the end of every "Moon" (round), you must feed your villagers . If you don't have enough food, they will starve. Essential Early-Game Recipes "Ideas" act as blueprints for building and crafting
3x Wood + 1x Stone + 1x Villager (Steady supply of wood). Stacklands