well if you buy it from AFM, they will give you a basic tune to get you going. From there you can teak it a bit. The tune i got from Rick was actually damn good for the 331 blower combo i have now. your best bet though is to get a wideband sensor to be able to actually see what is going on.
the unit itself is fairly easy to use. its more so knowing what to adjust is where the tricky part can be.