What are the best zk resources for someone with conceptual knowledge to start digging into the weeds?

Beyond “finding Waldo” or high level explanations - and getting into the math, the properties that make zk useful 3) zkrollups 4) zkml

first you need to know the basics of cryptography:
1. crypto101
2. dan boneh online course
3. introduction to mathematical cryptography
4. A Course in Number Theory and Cryptography

Then you learn zero knowledge proofs:
1. Moon Math
2. blog.lambdaclass.com

I would focus on Groth16, Plonk (kzg) and Starks/fri first.

haardik.dev | Founder @learnweb3 | lead instructor /uniswaphooks | building @openfarcaster

talk is cheap, build.
C + rust + erlang + julia + λ. 
amateur in everything: distributed systems, ML, compilers and cryptography.

cto @ bwl.gg (lunchbreak.com), 80M+ users (bdut.ch) 🙏 built @remindme, @mintit, @gpt, @healthbot, farcantasy.xyz

may i interest you in my blog post?

blog.borodutch.com/zero-knowledge-is-easy-or-the-ultimate-how-to-article

There was entire Gitbook-type (but it was not Gitbook) website floating around that had a large collection of data. I lost that and can't find it.

A very ncie thing I can recommend though is the ZkProof community reference.

Hacker ( Solidity // C/C++ // Python // JS/TS // Everything Linux ) // Shitposter // Psychedelics // Full Anon

Ingonyama? Yeah that’s pretty good been looking through it recently - thanks for this one I’ll check it out!

There was entire Gitbook-type (but it was not Gitbook) website floating around that had a large collection of data. I lost that and can't find it.

A very ncie thing I can recommend though is the ZkProof community reference.     

https://docs.zkproof.org/reference#version-03

Proofs, Arguments and Zero-knowledge by Thaler is all you need

https://people.cs.georgetown.edu/jthaler/ProofsArgsAndZK.pdf

Investing and Engineering @a16z crypto. 

Did my time in big tech, since recovered.

The Thaler Book

https://people.cs.georgetown.edu/jthaler/ProofsArgsAndZK.html