youtube has great guides on each of these and google is a BEAST, buuuuuuuut
it works more or less like this...
low stress training (LST), and super cropping are similar except that one is sweet and nice(making love to your wife) and one is brutal and violent(fucking her sister)
in both instances, upper branches are brought down low to even out the canopy of a single plant.
LST is done over time(minutes to weeks) and super cropping is just done...and intentionally violently so that it heals stronger...
topping is cutting a plant (generally at the 5-7th node(counting up from the bottom starting with the first paired node) off, leaving two brances to become the new top of the plant - poof - 2 cola
Fimming, which you dint ask about is yet another variation on this same theme(there are gazillions)
the point is... there is a chemical in these hookers that goes UP and ONLY UP it continues to go UP until there IS no more UP - at this point, it plants it's little freak flag and claims that nugget in the name of KOLA...
the highest point on a plant defines its apex - not the termination of the mainstem...dig that - so if you get all the branches more or less even, you will receive more or less uniform more or less BEAUTIFUL bagalicious budnuggets - not to be confused with buTTnuggets which just aren't QUITE as good
lollipopping is generally a sea of green trick to achieve a similar goal - you cut off ALL side branching more than a 1/4 inch or so off the mainstem, leaving no option but for the plant to place its energy there, adding to the kola(being pressed into sex with your mother-in-law, who knew about the sisters).
and -NO- the point of growing outdoors is to allow the plant to self actualize, thereby teaching YOU how IT wants to grow - very humbling