Intro to Oxygen NOT Included

There are many ways to generate power in the game. The first way you make power is the manual generator. Your Dupes have to run it by literally running on it. Good to start with, but that's it. I recommend moving to coal power as soon as you can. You may want to put the coal generator at the bottom of your colony so the carbon dioxide stays there. Remember that CO2 is heavy, Hydrogen is light. You could use the CO2 for mushroom farms. If you chose the forest asteroid, use the wood burning generator.

Use the diffuser then unlock the algae terrarium and ditch the diffuser. That's it. Really. I suppose you could use wild or domestic Oxyfern.

I recommend starting with Shine Bugs. Then move on to Hatches. Then try to get a Sun Bug by feeding the Shine Bugs Bristle Berries. Then maybe a Sage Hatch by feeding them only dirt. Alternatively, you could go for Smooth Hatches by feeding them metal ores. They only eat ore, but they excrete refined metals. After you unlock the caustic biome, go for Dreckos. Then try your luck with Glossy Dreckos by letting them graze on live mealwood plants. Just don't put a bunch of eggs in with your critters. They don't like being crowded. I suppose Dreckos go well with Shine Bugs because Dreckos excrete what Shine Bugs eat.