Yeah, sometimes having this much information in one place can get a newbie confused ahah.
Yeah, but there aren't that great, I might have to go for that option, it's easier for me actually, what should I look for in a premixed soil? Just the basics, i'm pretty sure I can grow in just about any soil but what should I look for? When I had my outdoor grow I bought a soil that was kind of shit but the plant seemed to like it, I had 3 plants with soil from the terrain outside my house but the one plant that had the soil that I bought was bigger. Here's a photo of the soil, you can kind of see the soil, it had something that looked like bark but I'm not sure of what it was.
EDIT: What I want is dirt, I'm from Portugal so I don't recognize any of those brands. Like I said, I might have to buy some premixed soil from a plants shop, so what should I look for?