bitflipper
Once armed with that knowledge, you can now kick back and spend a few hours listening to your favorite records. You don't need to do anything special - your brain will train itself automatically. After a 10-20 hours you'll just instinctively know what a good recording sounds like on those speakers in that room, and more importantly, you will know when your own mixes aren't cutting it.

This is something I might need a more specific, short tutorial in. Any links?
I've got everything set up just right, as far as I can say - minus the sub, but that will likely be factored out after all anyway. I can barely get it to work as it is now, and for what it can do, it's pretty darned weak.
 
(I will be needing to invest in a sub in the future, however. Suggestions? I'm a budget-guy who works only for fun and for church, so I'm not looking for any pro-line stuff, but for the home studio.)

I have scored a couple good subs from Goodwill for $20-$30. Two are Yamaha's and one is a JBL. All were originally sold for well over $200 for home stereo systems. I am a huge fan of finding good old stereo gear at Goodwill. 
 
I only turn the sub on briefly and run a mix through it to check for low end artifacts like pops and once I even found someone tapping their foot on a mike stand. Those don't show in my NMS10. 
But for 80% of my mixes I only use the NMS10 and 90% of my mixes are near to bang on because I have used them for 20 years now. This has been in at lot of different rooms too.  I'm a huge believer in room treatment and most of my rooms have had some degree of proper treatment used. I've used a few BAD rooms and it makes it very hard to work. You end up depending more on headphones in a bad room. 
 
We all know by now that the NMS10 is possible the worlds most boring speaker to listen to music on. NMS10's and the little Auratones work because they are not coloured. 
So I think the more coloured your monitors, the harder it is to learn them.
And the worse the room the harder it will be to produce an accurate mix.  

DeeringAmps
THC or CBD for the 10-20 hours of listening?
 

Sorry, Tom, I missed your serious question. I think THC, to avoid falling asleep. OTOH, I have heard of people learning a foreign language by playing tapes while they sleep. So maybe dozing in front of the speakers might have some benefit.
 
Regarding subs: if you have 8" woofers, skip the subs. Even if you have 6.5" woofers, a sub still might not be worth the hassle. Smaller than 6.5", then yeh, the sub will help. But in any case, extending bass response down below 60 Hz will likely emphasize acoustical problems that you didn't even know you had.
 

... and as you get to different stages of mixing a song, stop and listen to a couple of reference mixes for your ears to compare.  Pick a mix that is similar in style to what you're doing.