AUS-8 is pretty easy to get along with. If you prefer freehand sharpening, I think the recommendation for a simple Norton stone (either India or Crystolon) is a good one. If you think an angle-guided system would help you out, the suggestion of the DMT Aligner clamp & wet/dry sandpaper is good (not very pricey, either). Any diamond hone would also work quickly, and a DMT Fine (600 mesh/25 micron) would fill the bill easily. The DMT 'credit card' hones are very, very handy in that capacity, and the Dia-Fold hones would also be a good option (Coarse/Fine would be my first choice, among those).
Ceramic hones like the Sharpmaker, etc. are very handy for light touch-ups, but will be very slow & tedious if some major re-bevelling or edge repair is needed. The diamond hones and the Norton stones are more aggressive, and better suited for such jobs. Same is true with the wet/dry sandpaper, in coarser grits (220-400).
A simple & firm piece of leather with some aluminum oxide or silicon carbide compound (these are usually 'white' and 'black', respectively) would work well as a field strop for stainless like AUS-8, after tuning up the edge on the stones. Green compound might also work, assuming the proper work is done on the stones first. It's a much finer grit (0.5 microns on average), so it doesn't do well if the edge isn't already pretty refined.
David