Pause the game immediately (Spacebar). Look at the bottom right. You have three colonists. Click each one and check their tab. You want one good at Building, one good at Plants, and one good at Cooking/Medicine.
Because two hours is often not enough time to grasp RimWorld's depth, many community members recommend watching "Let's Play" series on YouTube to understand the flow of the AI storytellers—Cassandra Classic, Phoebe Chillax, and Randy Random. rimworld demo
In the demo, click on a colonist, then right-click on a task. You'll see a "Prioritize" option. Use this constantly. But remember: If they are hungry, tired, or about to have a tantrum, Pause the game immediately (Spacebar)