For nationals of most countries, entry is visa free or you can get a visa on arrival. Please check http://www.travelchinaguide.com/embassy/visa/macau.htm for more details.
Travel from Hongkong airport to Macau:
You can travel by turbojet from HK airport to Macau without having to go past HK immigration. Your baggage is collected and transferred when you buy the turbojet ticket. The counter for buying the ticket is before the immigration checkpoint. For the sailing schedule, please check: http://www.turbojet.com.hk/en/routing-sailing-schedule/hk-airport-macau/sailing-schedule-fares.aspx
Travel from Hongkong to Macau:
If the turbojet sailing times are not suitable, you can complete your immigration formalities and take the turbojet from the China Ferry Terminal. Please see the following for directions: http://www.wikihow.com/Get-From-Hong-Kong-Airport-to-Macao
FDCT Auditorium, Alameda Dr. Carlos d' Assumpção, n° 411-417, Edf. "Dynasty Plaza" 9° andar, Macau.
Please email firstname.lastname@example.org if you have any questions.