You're welcome, man!
Just to put your mind at ease, I topped each of my plants between 10 - 20 times each! After each topping, the plants just come back stronger.
To give you an idea of what to expect, look at the following picture:
If you look at the top fork, you will see a little nub. That's when I cut the top. You can also see how the node below the fork has put out two major branches. These are the four main branches that usually form after you top a plant. Sometimes, you end up with three or even five branches depending on the luck of the draw (cut, actually).
As far as training your plants, I use canes, which you can buy at any plant shop. They're good for two things. You can use twist ties to support the main branches when they develop. I put in one cane by each branch, then attach them with twist ties.
I using string (thick dental floss, actually) to either pull the branches apart to leave more room for light to enter, or more usually, to tie down the top branches when they get too unwieldy. Here are a couple of pics to show you what I mean:
Canes One
Canes Too
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It's a little hard to tell from the last picture, but I've tied a string near the top of the branch I want to bend over and attached it to one of the canes. Then I pulled it down a couple of inches. I put some tension on the branch, but not too much, so as not to break it. If I want the branch to be lower, I wait until the next day or two, then wind a couple more loops around the cane to pull the branch lower. This way, you can slowly bend the branch without worrying about it breaking. I did this to my last crop so many times that my grow room looked like a bondage dungeon.
If you see a branch is starting to get too big, you can tie it with string to a cane and, as it grows, it will be pulled over slowly. This is a proactive way to keep the branches from getting too tall, rather then trying to drag them down after they've gotten too tall.
Looking forward to seeing some pictures in a couple of days!