Its actually fairly easy, it does have setup utilities, but they are like what you'd see in DOS.
Usual procedure is, install, it will prompt for network setup during that, and usually try to detect your ethernet card if you have one.The slackware site does have step by step guide.
Then reboot.
Then setup X, thats easy, as root type with the recent edition xorgconfig, answer the questions and follow the prompts
then pick a GUI, type xwmconfig and hit enter
if you want at anytime to redo some things, just type pkgtool as root and follow the menu, it will allow you to change most things and uninstall or install software
after that, just type startx and your graphic provided you configured X the right way
open a terminal or console window
at this point type alsaconfig and setup your sound hardware, again follow the prompts and menu, after that, open a mixer--->alsamixer is fine, or rexima,or aumix, or whatever and adjust the volumes
then add a user--->type adduser <desired name> and follow the prompts
log out of X
log out as root
log back in as reg user you just setup, type startx, your now graphic and logged in a reg user, thats all there is to it
if you have problems with your hardware they are usually pretty easily fixed provided you know what steps to take AND MOST IMPORTANTLY, youve done your homework and know that your hardware is supported
its really not that tough, what gets most people in trouble is they pick funky hardware,and dont check beforehand if its compatible, then they get in even more trouble by not following instructions TO THE LETTER when it comes to setting up other things, linux is very literal, there is no room for bad decisions
For example if you have an nvidia video card like a geforce or whatever that needs nvidia drivers for 3d support, you must absolutley follow the directions to the letter or it will not work, period,linux does not deal with user error well, its right, or it doesnt work at all.