Plant mediums?

I walked up to my room today and discovered that my first successful germination occurred. I have no cash for potting mix, and I'm skeptical about using the soil around my house. What conclusion should I come to?

Peace.

Growing indoors at this point may not be for you.

It does cost money to even grow in dirt. Well, to grow it well. You can just put some seeds outside somewhere and see what hapens. Best results are never free.