Glad to have been of some use.
You're not alone in having the dock taking up valuable screen real estate. Most of the people showing how to use various Mac programs on YouTube are guilty of this too. I'm wondering if it's a self sustaining attribute, since the Dock is one of the interface items that automatically identifies MacOS and therefore anyone demonstrating a Mac program thinks it needs to be on their screen and consequently users looking at the videos never question it.
Because I come from a graphic design background where every vertical pixel is at a premium and therefore any interface elements make use these pixels at the expense of what is in the program window are banished. At the moment my bane is the Adobe "Home Bar" which is at the top of every Adobe program and for many users like myself serves no useful purpose, but can no longer be removed/hidden.
And you never stop learning Logic IMO. I've been using it for over 30 years now, when I got my first copy it was either late V1 or early V2 when it was just for sequencing external MIDI instruments rather than the fully-fledged DAW it is today. There is no correct way of using it; the two people I collaborate with each use the program in a completely different way to me, yet we all manage to get similar end results.
Finally for reference here's my "home studio" set up (which also doubles as my graphic design studio for my day job) You can just see the bottom of the dock on the edge of the right hand screen: