I'm going to HK, Shenzhen n Macau then back to HK. Can u advise me how to go? Ty

At Hung Hom MTR station, you can take HK East Rail line to Lo Wu. After getting off, you can easily cross the border to walk to Shenzhen Luo Hu. Then transfer to local transportation to ur destinations.

Ride Shenzhen Shekou metro line to Shekou Port to take a ferry to Macao. You would be taken to Maritime Ferry Terminal or Taipa Temporary Ferry Terminal. Which one would you prepare to arrive? Just confirm that when buying the ticket.

After ur visit in Macao, go to the Maritime Ferry Terminal to take a ferry back to HK.