You can call the number I provided above to get the detailed information including the fees.
Yes. You should take the bus to the direction of CU. I don't know the name of the bus stop you need to get off if you take Bus No.4, but I know if you take it to the direction of CU ( It means from north to south), you need to get off at the stop just after Bus No.4 turns right ( the Queensway is just at your left hand after its turning). The terminal is quite easy to find. I don't think you will miss it if you take Bus No.4 that I suggest you to take at least at your first time.