the best way to get to ghandruk is what nepalena told,u don;t need to keep on asking too, the only place where u can get confused is at birethati ,there u can ask some ppl about which way to take to ghandruk.Once u get to nayapul u will reach ghandruk in 4 hours and return the other day,so it is pretty short hike.If u would like to experience a real hike ,why don;t u go to annapurna base camp,that will b interesting?