i found it to be very intuitive to learn.
basically select the regions that you want to work on.
hit capture selection to let bd know what the bar range is.
hit analyse and bd looks at transients.
drag sensitivity slider and watch where the slice points are showing up. if not good change to sub beats or to beats. if still not good select a smaller number of bars. 8 bars usually works for me.
hit seperate region button.
hit conform region.
hit create fades.
this is the basic deal. play around with different sensitivities and quantize settings. i sometimes have trouble with fills and treat them as a seperate bar. it also works best for me to listen and decide if non quant is working better that quantized. i also like to edit bass and drums at the same time.
hope this helps some.