I'd recommend the Webpack tutorial by Andrew Mead, interestingly enough. It goes through all these tools and why they're needed, and you build out a simple config with Webpack and understand exactly what it does and why.
I really like it, actually. I finally had a free hour this afternoon to start getting into it. I'm only on video 6 so far but I've already learned quite a few things that I had missed and/or misunderstood previously. I've also sent it out to my team so that they can check it out next week, after the holidays, (and during work hours) to fill in some of the gaps they may have, as well. Thanks again for mentioning it and linking it!
