Seeds aren't legal in the US. Still, a lot of seed places ship to the US. You can try seedboutique, a lot of people have success with them.

Growing isn't easy. To properly pull off an indoor grow you need to know a lot of information, and at LEAST be willing to drop 300 dollars. I say at least because a really nice grow will run you about 1200.

Go to the grow section. It's about growing.