Come on, dude. Explanations for those of us who know nothin'.
Four Pillars: Technique, Tactics, Physical Conditioning, Mentality
The "Global Method" of training (otherwise formerly known as "The Liverpool 5-a-side method
) basically tries to train all four components at the same time, thus saving time and allowing for more rest between sessions and games. So instead of structuring a training session like so: Warm-up, Speed work, Technical patterns (passing, dribbling or shooting), Tactical shape or Attack vs Defence, Small Sided Game and/or Large Sided Game, Stamina work, Cool Down - a "Global" session might instead look like this: Warm-up with a ball, speed work with a ball, Keepaway Game/Rondo, Positional Keepaway Games, 3v3-5v5 games, Cool Down.
As you can see, there's a lot less sections in the "Global" method, so sessions can be shorter, tighter and more intense. But there are drawbacks - technique isn't honed as it could be, the small sided method doesn't lend itself to formation and positional repetitions (which weakens defensive work), and you're relying on the honesty of the players (and also heart-rate monitors!) to keep the intensity up to get the fitness desired. Klopp's method is to separate it all out so you can focus on honing each component - training fitness and technical components in the morning session, then doing shape training, unit training (defence, midfield or attack), plus training games or 5-a-sides, in the afternoon, for example. More gets worked on, but recovery time is shorter between each event (training or game), so your sports science team have to be on point, and rotation becomes necessary as the season wears on - which means a good quality squad that is consistent across the level of the team.
