if you are just starting keep it simple,go with a base nute,go with a silica,go with cal mag,and go with either a bennie bacteria,(myco) or a product such as zone,or a sterile environment with h2o2,the last items mentioned will keep you from, getting bad beasties,such as pythium,
there are lots of products you can try just get the basics ,learn to train your plants and top them,learn to trim your plants,stay away from products with too much nitrogen,lucas is a good basic formula.learn it and go from there,
mke sure environment is dialed in to a T,the most important thing,
good luck