my biggest problems when i first started growing indoors was over watering and over feeding, trying to rush the plants. i found its better to do things on the "under doing it" side rather than over doing anything, especially ferts. try your first grow sort of basic and see how the plants react. get used to them and what they do. if the nute bottle says 1 teaspoon per gallon, start with a quarter teaspoon, etc and watch the effects over a few days. once you go too far, its harder to come back. just dont "over do" anything, the plant will do all the work for you. good luck with the ww.