I'd recommend reading about the life of Elder Joseph The Hesychast (Mount Athos). May not be so intensive as to the rules of hesychasm, but you'd get to see how it intertwines with other areas of life, in general, such as Asceticism, the various trials, the dangers of spiritual life, in general.
Also, The Desert Fathers are very simple, but deep. I'm one who recommends the understanding of how hesychasm works. We are called to pray unceasingly, anyway; that is to have God before us no matter what we do and where we are, to establish a permanent communion with Him. Hesychasm can help, but in what way, and to what degree, it really depends on each individual and his circumstances. Worst thing that can happen is for hesychasm to become an end in itself. Best thing that can happen would be if one became an actual hesychast (which not many people do even though they may pray unceasingly).