It takes devotion to learn all the crazy shit you need to know to grow good pot. But once You have a good understanding, and have fucked up enough to learn what you can/cant do. It isnt so hard anymore, shit it's more fun than anything.
But researching at the start can be very hard, takes months/years to learn the bulk of what you NEED to know. And the research continues all the time, because you have to really want to get good at it. Or maybee thats just my experience with the hobbie.
peace