Reference textbooks

I would highly suggest contacting some local acupuncturists to see if they would be willing to talk to you and/or allow you to shadow them for a shift or something along those lines. In my own case I was lucky in that one of my fellow PhD students was also an acupuncturist. He was willing to let me come to his office, talked to me about acupuncture as a career and even gave me a treatment so I could see what it was like. That experience solidified my realization that acupuncture was exactly what I wanted to do.