I want to travel to Hong Kong for a business purpose and it is my first time. How do i start?

You need to prepare following documents and submit them to Chinese embassy in Ghana for HK visa application:
1. Properly and truthfully filled out Visa Application Form, to which one passport-size photo is attached.
2. Valid passport with blank pages and a photocopy of the data page.
3. Hong Kong guarantor (or company name)'s address, telephone number (if none, please fill in form with "No guarantor").
4. Copy of other country's Resident Permit (if any).
5. Round trip air-ticket booking list, hotel reservation & Ghana company register certificate, tax clearance, true bank statement and employed certificate.
6. Original invitation from Hong Kong's host company.