Are there any modern Wyckoff materials that explains his method in depth?

Hi,

I wanted to learn the Wyckoff method thoroughly, so I started to read his book “Trading and Investing in Stocks”.

I’m on page 56 (pdf version) and I already find it pretty hard to understand, although I have a little experience with technical analysis.

I even found (to my understanding) a few contradictions between his explanations to the chart examples he tries to explain, so maybe I’m not getting it right.

Are there any other good, more modern Wyckoff materials that deep dive like the classic book above does?

Thank you