This is a discussion on Is focus on reviewing large pot hands overrated? within the online poker forums, in the Learning Poker section; I used to play consistent NL100 > 10 years ago and recently started to play again.
Needed to relearn some basics and I do not have
Hmm, I would say focusing on large pots makes more sense. Because there are more likely to be mistakes made in larger pots. I.E. did u choose the right line, did you read his range/specific hand correctly, were the bet sizes optimal, were you getting correct pot odds/implied odds etc.
Also pots you lost should be studied more than pots you won, for the same reason.
However, studying the smaller pots/spots is also of importance. Even pots you folded pre-flop should be studied in a way.
Basically study the small pots a bit, medium pots often and your big pots close to all the time.
In terms of differences over the last 10 years. I would say the main difference is: 10 years ago you would heard the term 'LAG' and 'TAG' a lot. But these days it's 'GTO' and 'Exploitative'.
(Side-note: players 3bet PF a lot wider these days than 10years ago, so grinders are generally 4betting lighter these days to counter it, but nothing crazy)
So, by studying GTO or using a solver like 'piosolver' you can see how 'GTO' you played.
And by seeing the general weaknesses from the player base at your level you can see their mistakes and you can strategize how to exploit them.
There are quite a few programs for learning GTO out there, personally I liked PokerSnowie and piosolver, but I'm not big on books so hopefully someone else can suggest something.
For Exploitative, I'm a big fan of Charlie Carrel, I know he has some material out. But there are others of-course.
As for which hands you should post, I'd say whichever are the situations you cannot answer yourself. But after studying some GTO and Exploitative styles you can start to answer a lot of them yourself.
I like to review hands that I thought I played either bad or good. But I think I more try to review my entire night to try and identify my overall game. I also will sometimes concentrate on a specific part of my game if I think I have been weak there. Example I might work on button play or how I defend or not defend my BB. Maybe I work on my 3 bet ETC.
I can discuss politics, religion and play poker without getting emotional.
I've definitely had large-pot-only study sessions. You're guaranteed to see hands where you made significant decisions worth more EV than your average spot. But for sure I would also look at small-medium pots too. For these, I don't usually apply a tracking software filter like I would for large pots (BB won/lost > X). Instead I'd just review games/sessions or do a filter like VPIP = True and look at a number of hands.