Shagrathanswered grow question 5 years ago I think this has to be a troll right? xDD BUT JIC it isn't: Those are the trichomes that contains all the cannabinoids. You should read atleast this https://www.leafly.com/news/cannabis-101/what-are-trichomes-on-cannabis.
I can also highly recommend growweedeasy.com and the best for last. Really thorough but easy to approach book is Ryan Riley's Growing Elite Marijuana. You should learn all that you need to get started and more!
Happy growing, may the yield be good! 💪