Do you have written process on getting from HKIA to Shekou Port..I will stay in Shenzhen?

I will be landing in HKIA Sept.28th 6:30am....on a Singapore Airlines flight....My frined I will be meeting and told me to meet him at Shekou Port....What do I need to do once I land at the airport to catch the Shy Pier Ferry....I will go to Shenzhen,not departing to another city. Can I used the Shy Pier Ferry to get there?? Do I get my suit case first from baggage cliams then get a ferry ticket?? Because I land at 6:30am can I get my suit case...get something to eat and then purchase my ferry ticket with in the airport after passing customs?? Do you have a process on what I need to do to get to Shekou Port from HKIA...using the Sky Pier Ferry.