LST (Low Stress Training) is so simple. You're basically just tying down your plant and being that it seeks light, it redirects itself by bending toward the light.
4-Way LST - You let your plant grown about 5-7 true nodes (not the single leaves, but the multi leaves) and top it above the 2nd true node. Then you take some metal coat hangars, cut them and make U shape stakes and just stake each top in the soil and it will stretch out. It seemed a lot complicated to me at first, but it's so simple really. This is the way that Trainwreck in the above pic was done.