There's a lot of training on VMware Infrastructure out there; both VMware and third parties offer both instructor-led and self-paced training.

The key benefits of self-paced training are that it's easy to consume in small chunks, wherever you happen to be at any given moment; and that its price up-front is smaller. The key benefits of instructor-led training are that you get to play with hardware you can't get fired for breaking; you get to network with others who are doing similar jobs at other companies; and you get to pose questions to a human expert in real time.

Different people learn best in different environments, so there's no one kind of training that works best for everybody.