Two ways have served me well, I think.
A. Caddie 50+ times...a couple of hundred rounds for all level of player, over differing seasons and times of year.
B. Have the course completely to yourself for multiple plays.
If you are an ardent golfer and GCA enthusiast with a context...like everyone here... either practice will result in a thorough view of the course... I'd say TV too, because I've been watching every major championship for the last 60 years on youtube (amazing) and combined with an enthusiasts obsessive study, I feel I have "seen" Hoylake, St Georges, etc to describe and appreciate them well, even though i've never been there...but I know people would object in a thread called "Best way to..."..
A. About fourth and fifth in my most looped courses are the two WF courses where I have about 150+ rds on each, from touring pros, Anderson players, Buddy Mariucci and top local Met players to the worst outing slashers in 6 hour 144 player shotguns in July... it's a grace, when you care about and regard golf and the joys its architecture produces...I know why these courses and their constituent holes are so worthy of your praise...and I know just why its so difficult on great players... and I exist in a golfing sense where the rubber hits the road on all the tangents so oft-discussed here...concessions to elite play...tree removal...renovations/restoration... all of it.... when you work the course at golf, you know it.
B. Another grace I enjoyed was to have had on three or four occasions besides group play, Fishers Island all to myself... played multiple tees, two balls, chipped over and over again using different strategies...played ground and aerial shots....putted all angles....relaxed, took in the view for cigarette-long stretches...took pictures. I'm not saying your can hit the Top 100 in this way from afar, but the biggest perk you can enjoy at a nice course, is a chance to experience and play it without regard to other parties. I'd always tell my companions when I secured such seclusion..."you've got it better than the members...they have to deal with one another...we can play naked and nobody is going to say anything."