The second edition was published last Feb (2023) I believe. I read it on my Kindle, having “flicked through” the online version about 6 months prior, and yeah having it page by page with bookmarks etc was almost as good as paper, but far superior to the web version and I was able to read it cover to cover and gain a lot from it. I immediately then read about 4 other books on Rust! Can recommend “Rust Atomics & Locks” by Mara Bos, and “Rust for Rustaceans” by Jon Gjengset for the next level up.