Hello and Welcome to LinuxQuestions,
Congratulations on your distro choice
Although it's not the easiest one, in my opinion it's one of the distros that will teach you the most about linux.
For your wireless problem have a look at these pages of the Slackbook
Just typing the command:
should tell you if your wireless card is detected.
Start by putting the output of that command here (if you cannot get it to work by reading the book)