Treat the bird with a commercial spray available at pet stores. The first thing you should train your parakeet is how to perch on a finger. Remain calm and speak in a calming voice. Gently press your finger into his chest until he learns to step up upon your finger. Offer him praise and a treat.
Parakeets can learn to mimic words.
Repeat the word or phrase over and over. Male birds are much easier to train than female birds. Birds enjoy sounds and music in the background. Many of the soothing earth sound tapes are great. Keep the volume low.