Poker in 2024 - reading material?

Hi all,

I stopped playing poker properly/regularly around 2013-15 and having played my first live game for a long time recently, I've started getting the itch again.

By way of background, I used to play micro (up to nl25), 6-max, and I was a winning player although admittedly nl25 started getting tough to beat. I used to multitable and ground out around 1,000 hands a day so I had some decent volume but nothing compared to others. As a result, I had a fairly good foundation but I've become so rusty since stopping.

As part of my re-introduction, I'll revisit some of the early material that I learnt from (Harrington on cash games II, for example) but I know poker has moved on quite a bit since 2013-15. Back in those days, people were talking about GTO but it wasn't anywhere near as prevelant today, especially with solvers in play.

Are there any books/threads that one would recommend to get back up to speed for 2024?

My focus will be on live poker, as I simply don't have the time with work commitments to grind online, but I still want to re-learn as if I'm an online grinder.

I have Applications of No-Limit Hold 'em By Matthew Janda on my bookshelf somewhere gathering dust, is this still relevant material?

Thanks!