www.hempfiles.com is a wonderful resource for anything ganja related. As far as tips for harvesting, When you want to bud your plants, set your lighting to 12-12 (thats 12 hours light, 12 hours no light), buy a loop from a jewler (those magnifying things they use to look at precious stones) , or at least a magnifying glass. Take a look at your buds, look for fully developed trichomes. Trichomes are the white things you find on good buds, a lot of people refer to the trichomes as crystals. The hairs on your buds should turn red-brownish when they are ready to harvest. When these conditions are met, you can harvest. Cut the buds off leaving as little stem as you can, or if there are a lot of buds grouped fairly close on a stem you can just leave that stem on, trim the leafyness, and hang your buds to dry in a dark, DRY area. The time to dry differs so you just gotta check the buds once in a while, the drying process will take days, possibly 7+. Your buds should break up without too much effort, but shouldn't be crumbly.