It is a satisfying material to work with if you follow a few simple rules. Most of these are to do with it being a notch sensitive material. In other words it will easily start to crack wherever there is a sharp nick or inside corner to concentrate stresses within the material.
As Maude says, careful choice of sawblade pitch in tpi (Teeth Per Inch) relative to the thickness of the material and rate of cut should produce good results even with a hacksaw. Sometimes however, trial and error is the way to go with more complex cuts. Be prepared to do the same piece over from scratch if it goes bang (usually just as you're finishing it in my humble experience).