You can change the video mode on all consoles by adding something like
the following to /etc/rc.conf:

	allscreens="80x30"

You can use "vidcontrol -i mode | grep T" for a list of supported text
modes.
		-- Konstantinos Konstantinidis 

Any user that is a member of the wheel group can use "su -" to simulate
a root login. You can add a user to the wheel group by editing /etc/group.
		-- Konstantinos Konstantinidis 

Over quota?  "du -s * | sort -n " will give you a sorted list of your
directory sizes.
		-- David Scheidt 

Handy bash(1) prompt:   PS1="\u@\h \w \!$ "
		-- David Scheidt 

Ever wonder what those numbers after command names were, as in cat(1)?  It's
the section of the manual the man page is in.  "man man" will tell you more.
		-- David Scheidt 

"man hier" will explain the way FreeBSD filesystems are normally laid out.
		-- David Scheidt 

"man tuning" gives some tips how to tune performance of your FreeBSD system.
		-- David Scheidt 

"man firewall" will give advice for building a FreeBSD firewall
		-- David Scheidt 

You can often get answers to your questions about FreeBSD by searching in the
FreeBSD mailing list archives at

	http://www.freebsd.org/search.html

You can adjust the volume of various parts of the sound system in your
computer by typing 'mixer  '.  To get a list of what you can
adjust, just type 'mixer'.

You can automatically download and install binary packages by doing

	pkg_add -r 

where you replace  with the URL to the package.  This will also
automatically install the packages the package you download is dependent on
(ie, the packages it needs in order to work.)

You can get a good standard workstation install by using the
instant-workstation port/package.  If you have ports installed, you can
install it by doing

	# cd /usr/ports/misc/instant-workstation
	# make install && make clean

as root.  This will install a collection of packages that is convenient to
have on a workstation.

You can get a good generic server install by using the
instant-server port/package.  If you have ports installed, you can
install it by doing

	# cd /usr/ports/misc/instant-server
	# make install && make clean

as root.  This will install a collection of packages that is appropriate for
running a "generic" server.

You can make a log of your terminal session with script(1).

"man ports" gives many useful hints about installing FreeBSD ports.