I read a bit more of this "official guide", and I'm surprised Debian hasn't deprecated it. Parts are still valuable today, but others are meaningless, and a few

I read a bit more of this "official guide", and I'm surprised Debian hasn't deprecated it. Parts are still valuable today, but others are meaningless, and a few should be avoided. From the changelog, the document had one minor update in 2017 and one in 2013. It was mostly written in 2001-2007. Much has changed over the last 15 years.