I'm a beginner to learning GTO principles and want to create a study plan for myself. Upon going to GTOWizard, I saw that there was already a study guide, which included... (i did not include preflop here)
- C-betting flops IP, SRP
- IP vs BB, SRP
- BvB SRP
- Playing vs Cold-Callers OOP
- 3BP OOP PFC
- 3BP OOP PFR
- 3BP IP PFC
- 3BP IP PFR
- 4BP OOP PFC
- 4BP OOP PFR
- 4BP IP PFC
- 4BP IP PFR
While certainly fairly comprehensive, I believe it is important not only to consider position and srp/3bp/4bp etc, but also board runout. Is there a good list of boards I should be studying? (something that organizes all possible boards into perhaps only a hundred "groups" of boards). Thanks!

I'm not really sure if I understood your question, but since you mentioned you are using gtowizard I think a good way to study board textures in groups are the "aggregate reports" feature. You can see all kinds of boards on a single graph, what kinds of boards gtowizard prefer to check, bet, raise, call, etc. Another good way to study board textures is to create a drill and define a specific type of board texture per day.

For example, today you can drill BB x BTN vs b50 only on A-high rainbow boards, the next day you can drill on A-high two-tone boards, then on A-high monotone boards and so on.
I think it's a lot easier to learn that way instead of just be drilling on random board textures. You can also write down on a notepad the hands you played wrong and review every day before you start your studying session, that will make your study time even more effective.

Anyway, good luck for you.

Instead of focusing solely on one topic, I recommend comparing stuff. Compare IP SRP vs BB and IP SRP vs SB on the same flops. Compare BTN vs BB on the same flops at 20bb 50bb 100bb and try to understand the differences. And yeah of course use aggregate reports. For turns also.