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

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

may i interest you in my blog post?

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

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

Thank you for providing this I definitely want to try it out but when I 

git clone git@github.com:backmeupplz/zk-starter.git

I get ...

Cloning into 'zk-starter'...
The authenticity of host 'github.com (192.30.255.113)' can't be established.
ED25519 key fingerprint is SHA256:+DiY3wvvV6TuJJhbpZisF/zLDA0zPMSvHdkr4UvCOqU.
This key is not known by any other names
Are you sure you want to continue connecting (yes/no/[fingerprint])?

...

I can write solidity and I want to build cool stuff