Training isn’t about telling people everything that you know. Its about helping people learn what they need to know.
The temptation with technology training is to demonstrate all the things that the technology is capable of doing, or all the things that you know how to do with it. But it’s not a forum to demonstrate your extensive knowledge on the subject. You may have spent weeks or months (or even years) honing that knowledge. There’s no way you can (or should want to) offload all that knowledge during a two hour training session, no matter how good a trainer you are.
If instead, you approach it from the viewpoint of showing people only what they need to know in order to get their work done, then you’re onto a winner.
Less irrelevant crap for people to wade through and less wasted time for everyone involved. Simple.