Well, I've been pruning for a very long time so it's very intituive at this point. There are great tutorials on Gwe but pruning to me is a very personal thing. It's the artistry in gardening. I've had to learn lately though that ganja buds require special attention in regards to light. In veg it's all about air flow and bud spots. Keep them clean and healthy. In flowering timing is essential, between stretching and fattening, lots to keep in mind. Removing leaves that cover buds, bud spots that don't receive any direct light, branches that touch each other, keeping the plant in a vase shape, removing dead branches and leaves, sanitation, keeping a close eye on your plants, learning about and spotting early signs of pest issues...but quite honestly if you read through all the tutorials a couple of times you'll have a good head start. Next I'd suggest reading grow journals, green75 is one of the more agressive pruners here, that'd give you an idea of what to aim for maybe. It's more of my pruning style, just gotta get my brain around the particulars of this plant.