Hong Kong MTR Rail Line. Thanks for the help so far! I need a little more help!

I am taking the Ferry to Hong Kong. I am landing at the wrong port. I can see that I need to take the MTR from Hong Kong-Macau FerryTerminal to Kowloon. I need to get to the YMCA across Victoria Harbor. Someone told me I must switch trains. Is this true? Is this an easy trip for a first-timer in Hong Kong? I can't find the names of the stops either. Any help will be appreciated!!!
Thanks, QB