first time growers should not attempt any advanced growing techniques IMHO. Just get a bit of experience with the basics is going to do more for you than all the advanced stuff combined. Only go advanced after you have the basics down pat.
here is what I do, I cut of almost the whole bottom half of the plant clean of all stems, leaves, shoots. Normally I do this the day i switch to flowering. The reason is becasue I am using a 600 W HPS in cool tube and the light does not penetrate all the way through the leaf canopy ending up in fluff bud on the lower branches. This takes away from my main cola. I like a super solid huge main cola, makes it easy to harvest and has the most weight.