How do I get to the ferry to Zhuhai from the Hong Kong airport?

After landing, you don't need to go through the immigration. Just walk to Arrival Level, T1 and buy the ferry ticket (both cash and credit card payment are accepted) at the Ferry Ticket Counter at Transit Area E2. There you also need to show your luggage tag receipt and they will help you handle the luggage. Afterwards, take the free shuttle bus to Skypier to take the ferry. Don't forget to check the status of your luggage there.