As for a tutorial on installing slapt-get the internet contains thousands of them. The home of slapt-get is here
The install page on the website contains the following:
Once this is done have a look at the READMETo install:
$ make install
Edit /etc/slapt-get/slapt-getrc (see README for details)
Also this link is another good one concerning BT3 beta and slapt-get
As for an make error 2 what exactly (read, cut and paste here in this thread) does the error say?
For more info on make see either the man page or here