1.Yes, you can take the Bus 973 at the Ocean Park Road Stop, the bus will get to Repulse Bay and Stanley Village, which is close to the Stanley Market.
It takes about HK$6.1 from Ocean Park to Stanley Village for about 40 minutes.
2.It is no more than 700 meters from the Giant Buddha to the Ngong Ping Village, here you can take bus 21 from Ngong Ping to Tai O, it costs HK$6-10 for 15 minutes.