The mini-guides chapter is a section of the document that describes certain concepts in more depth than the usual command descriptions. The information listed is fairly specific as I have tried to avoid the duplication of too much information that is already online.
rpm -V textutils
This isn't as cryptic as it appears. The line returned from rpm -V contains any number of eight characters plus the full path to the file. Here are the characters and their meaning:
S --- File size differs
This customised version has advantages over standard RPM, including automatic-dependency solving and Debian apt-get style functions (ability to download programs over the internet and have all dependencies resolved automatically).
The urpm* commands are all described in detail in Mandriva's documentation and various sources online.
Note that the list under section 24.1.2 comes from the RPM manual page, see  in the Bibliography for further details.