Any free read online, or actual books you consider a must

I play a lot more at work and figured I might try reading too,wondering if there's anything good (and free) online, as I didn't buy any physical books yet !
Also, anything I should add to my amazon want list ?
For context, even if easy to find out, I'm stuck around 1350, only really play online (tried to join a club irl but tbh couldn't figure out how)
tbh I also looked at the coach feature but I don't have that kind of money yet so that's a big rip
anyways, if anyone has something that can help, and especially reads then let me know please c:

Thanks !

My friend i am 2100+ and i am self teach i can help you for free. Pm i can guide you what to study or send you books to study

Oh yes, there are a bunch of good free courses on www.chessable.com/ . Have a look at :-) I bet you will find there pleasant courses for you.

Yasser Seirawan's books really helped me out. They are easy to read and relatively inexpensive on Amazon. I would love to find a good resource on end games and check mates. John Bartholomew has a course out just in the last couple of weeks that I'm looking forward to going through.

Must have books? Fifty Shades of Grey

100 Endgames You Must Know is pretty good.

I second #6, reading it now. Approaching the Rook endings chapter at the moment, dreading.

Just chess philosophy, how to link between middle and endgame...that could be a good experiments

For some reason chess book remind me of

You believe in a book that has talking animals, wizards, witches, demons, sticks turning into snakes, burning bushes, food falling from the sky, people walking on water, and all sorts of magical, absurd and primitive stories, and you say that we are the ones that need help?
Mark Twain