study-groups VS lnbook

To avoid Anchor Bias, I suggest starting with Mastering Bitcoin by Andreas Antonopolous available here for free . It is necessary to see Bitcoin as an invention like Electric light, Automobile etc rather than one of the many "Crypto Tokens". Once you start with first principles, you realize that Bitcoin solved the question of decentralized trust, Why POW is crucial to maintain security and the decentralization and why every other token is keen to a startup or pump n dump using unit bias or affinity marketing. If you want to study in a cohort and meet weekly with other learners then check out https://learning.chaincode.com/

p.s.: if you're unfamiliar with these terms, I suggest you read the How the Lightning Network works chapter of Mastering The Lightning Network by Andreas Antonopoulos. It's not too technical and if you have a basic understanding of Bitcoin, you won't have any trouble reading it.

Mastering the lightning network

You can read all about it here if you are interested: https://github.com/lnbook/lnbook/blob/develop/12_path_finding.asciidoc

I don't know about videos, but if you want to go technically deep, good start is Mastering Bitcoin (https://github.com/bitcoinbook/bitcoinbook) followed by Mastering the Lightning Network (https://github.com/lnbook/lnbook)

Lnbook getting closer towards being finished and can already be seen at: https://github.com/lnbook/lnbook

No problem. If you want to deep dive into LN, there a free and open-source book here, the first few chapters explain a lot about this without being too technical, and the following one really go deeper: https://github.com/lnbook/lnbook/

I recommend you to read Mastering the Lightning Network, especially this chapter, which explains the basics of how the LN works.

Check out the Mastering the Lightning Network book