When you trim portions out of a sentence, you basically change the entire statement.

Yes, a trainer/instructor is the most important link in the chain, especially if qualified to address issues specific to individual facilities or areas of industry.
But I also know that "live" training classes can sometimes be derailed by disingenuous students who don't want to be there to begin with. Having 1 or 2 of those in a group can waste time and change the mood of the class.

Online training per se does not address queries of the nature cited, but that is where you, the trainer comes in.

I simply meant that if someone wishes to learn as much as possible, online sources can be as beneficial as having a DVD tutorial to watch, or a manual to read..........whenever one wants.