Ye you GOTTA have good compost, like mooons says you can get good organic seeding compost for a low price these days.
If you get a nice light (light on nutes) compost then you don't have to start on the nutes until the plant is 2 weeks old.
I use organic compost and organic nutes and get 4oz from four plants, each in a 2L pot.
I used normal supermarket compost at first and totally screwed my first two grows, quality soil makes a BIG difference.
All the best,
nibs.