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

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