This is a gem of book finally in reprint:
https://www.amazon.com/dp/0965416712?psc=1&ref=ppx_yo2_dt_b_product_details
This is a nice yt:
https://www.youtube.com/watch?v=nLIEYvHMS8U
this is a nice series on yt:
https://www.youtube.com/watch?v=i2Aktms_4Pg
this is nice once youre addicted and just want to watch more:
https://www.youtube.com/user/AugustJames2006
If you like John Wayne, and become full tree addict:
https://www.youtube.com/c/BuckinBillyRaySmith/videos
presentation not great but info good:
https://www.youtube.com/watch?v=XxfHpSfIKRs&t=965s
here is another good book if youre a reader, but recommend the 1st book 100% before this:
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look up, cut slow, listen, know your escape routes, look for branches the tree youre cutting could send flying to you (or break and fall on you later)
an inch is as good as a mile, but it wont clean shit outta your briches
The Fundamentals of General Tree Work by Jerry (G.F.) Beranek (Book) https://www.amazon.com/dp/0965416712/ref=cm_sw_r_cp_apa_i_9wLPEb5N0N619
It's 700 bucks on Amazon. Or like 900 for hardcover. I saw a handful of other online retailers selling it for similarly egregious price points.
It's from 1996 and its likely out of print. That's not to say that the info in it is not valid, but whatever wisdom is so coveted between its covers can be found elsewhere.
I highly recommend the illustrated guide to pruning, by Ed Gilman: An Illustrated Guide to Pruning https://www.amazon.com/dp/111130730X/ref=cm_sw_r_cp_apa_i_bBLPEbJWHYRRK
It is highly intuitive and has great diagrams and info.
If you're looking to get into arboriculture, it will be difficult to try to learn it all from books. I'm sure you're following a channel or two on YouTube, but if not then get on it. I strongly urge you to learn directly from a seasoned pro before attempting to climb or do any tree work especially aloft.