Most likely, you have been using a web browser or PDF viewer to read
the CLFS book so far. However, the temporary system in /tools
does not have any of these, so you will need
to find a way to continue following the book after booting into the
temporary build environment. One possibility might be to simply have
the book open on another computer, or even read a printed copy,
though one downside to this is that you cannot copy-and-paste
commands. Another solution could be to convert the CLFS book into
plain text, thus allowing it to be viewed with more, by using a command such as
the following:
lynx -dump /path/to/clfs/book.html > ${CLFS}/root/CLFS-book.txt
Other possible solutions include cross-compiling and installing additional programs before booting, such as Lynx or Links to view the book, or OpenSSH to allow remote login. See the CLFS Hints website at http://hints.cross-lfs.org for more suggestions that other users have come up with.