Cool Edit Pro manual
Here's a link:
http://www.alfors.com/Ruzne/cep2man.pdf
If you have the Adobe Audition DVD, that's a good place to start.
If you are REAL new to recording, here's a fast tutorial: go to Options/Device Order and make sure your sound card or other input device is selected in the "Wave In" tab. Also make sure that it is designated "Use in EV [Edit View]" in the "Wave Out" tab or you'll go nuts wondering why you can't play back tracks in Edit View. If you are not already in Multitrack View, press F12 to get yourself there (F12 toggles back and forth between the 2 screens). Click on the "In" field for the first track, and check that your sound card shows up as an input device. Click on "record" to arm the track.
If you have your instrument/mic/whatever properly routed to the sound card, you should be ready to record. Click on the big red "Record" button in the transport section (lower left, below the tracks). The cursor should start scrolling across the screen, and the track will show a pinkish color (and display the waveform you are recording). If that doesn't happen, you left something out.
To overdub, click on the first track's record button to turn it off, and click on the record button on the second track to turn it on (this is called "arming" the track.
If you record onto track 2, and Audition is recording track 1 along with your new material, read the sticky at the top of this forum titled "when track one records onto track two."
That's it. Of course, the devil is in the details....