There is a lot more to it than can be just written down in a paragraph, but having automated climate control including CO2 is a must. You can buy a small computer by CAP for $500 that monitors the level of CO2 in PPM's (parts per million). You want that to be at around 1110 during veg, than amp it up to 1500 once you flip the lights. It should only be running during lights on. Other than that, use high quaity indica genitics (most sativas are whispy, great high, but not great weight usually), very high quality nutes, and read every sticky on this site.
But you can have all that, and if you don't spend good money on excellent genetics, nothing will help your cause.