Oh yeah definitely look at the FF guide they have maybe the best step by step with numbers and everything to take the guesswork out:
Another forum/website I love to read is www.cocoforcannabis.com they’re the real dedicated site for this, tons of good guides, product reviews, and troubleshooting stuff from the editors there and then the forums are one of the more pleasant places on the cannabis internet along with here
Another few knowledgeable grower threads here on OG: