The Body Tuners are the ideal starting point for beginners as they are the most powerful tuning fork combination. The C and G tuners create a “perfect fifth” and open the gateway for healing and higher consciousness. Listening to these two different tones, your brain combines them to make one tone, bringing your whole nervous system to balance and integrating your mind and body. Within 30 seconds (the same amount of time it takes to stretch a muscle), you can achieve a state of unification and deep relaxation, which might take you 45 minutes to reach through meditation.
Also, If you don't already have it, I highly recommend the Human Tuning book as it explains in detail how these forks affect the body.