Well if you make at least one person smile in a day youve done a good job :) lol. I topped when they had reached 4th node, just cut when the stem has got long enough to reach in with scissors or blade, minding not to damage the new growth from 3rd node. They will then develop into 2 new branches. I let them get long enough to LST and when the head of each branch turned upwards towards the light i topped them again, they in turn form 2 new branches each. The side shoots also start shooting out from the branches, I let every thing settle and grow for a while and when the heads had reached the same level, topped again. And I've just continued that way since creating more and more bud sites :) Hey Im no expert lol just learned from tons of you tube vids and the good folks on here. Its surprising what you learn in a short amount of time. Im starting to check out chemistry and stuff, never thought id see the day ha ha. :)