What are /r/arboriculture's favorite Products & Services?

From 3.5 billion Reddit comments

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.