Here's a couple other sites that have helped me a lot. They are all useful, but some more than others.
Linux Home Networking
is based on Red Hat but there's lots of good information there. Some of the commands will be different, but gives a good background.
I've only read a little on this and it was helpful. It's written for newbies, so is pretty good for that.
Use Linux At Home
is good for the newbie that really won't be digging in deep.
Of course, there's Slackware Tips & Tricks
and of course the Revised Slackbook Book
. These final ones are great help.