It isn't that difficult. Just requires a bit more reading and research. You are just adding another step. They call it an "advanced" growing technique but really, you just put the screen over top and tuck the stems back under the screen whenever they grow through. It involves a few weeks of work but once the training is done you are off to the races.

This thread will tell you everything you need to know:

An Overview of Cannabis Training (ScrOG, SoG, FIM, Supercrop, LST, etc.)

Don't be intimidated. This stuff is easy. And no matter what you do, read up on Fimming. Let me know when you start the grow long by posting in up here. I'll follow along for fun!