Re: Always enjoyed my IT training days.
Or make the smartass (there always is one, isn't there*) your assistant. Works quite well as long as they're not also an asshole. Also, he'll be the first guy they'll ask the next day/week/month after the training when they run into any problems.
* Yeah, okay. Sometimes it's me, when I'm on the receiving end of any training. But technically it's not smartassery when it's true. And you can do it in a way that is actually helpful.