Very vague questions - Find a simple 2 part maybe...Something super easy like GH maxi grow and bloom powders. As far as what to grow in - I would again keep it simple and grow in an easy to use soil for beginners like Fox Farms Ocean Mix. That stuff is loaded with chemical and wont need any added to it for several weeks. Let those sprouts mature for a few weeks then transplant into a larger container. Veg them out for a couple months. Then comes the hard part....Use your sprouts now for mothers and take cuts that you will then flower or just flower those sprouts and enjoy.
Feed your sprout very minimal nutrients until it matures.