Hey new member here! I love growing and I just wanted to get involved. Reading opinions on these boards have helped me a lot so I’ll pay it forward by adding some content.
So topping! I like to top the main stem after 5 nodes, I top at the 3rd node. Then once those 2 new main stems have 5 nodes, I top those at the 3rd. I also cutoff the growth at the first and 2nd nodes each time I top. You can follow this sysem to create however many colas you want.
Anyway, that’s one way to do it. Where you top and when you top depends on the amount of space you have and what your goals are for the plant.
When you’re learning, try a technique then let the plant respond. Plant training is pretty easy, just let the plants heal between all the stress and after a couple times you’ll develope techniques you stick to.