The Gyan (also known as Jnana), mudra is a familiar mudra to begin your practice. According to Indian mudra researcher, Keshav Dev, practicing this mudra daily ensures mental peace, sharpens concentration, relieves tension, depression and insomnia.
To begin, make yourself comfortable and gently touch the pads of your thumb and index finger together. Keep the other fingers relaxed and upright. Lay your hand on your thigh with the fingers pointing upwards, rest your mind and bring your focus to your breath.
Think of your fingers as electrical extensions that send out, receive and internalize energy frequencies. These energetic vibrations can be applied for healing, stimulating or relaxing purposes and when combined with other mudras and breathing techniques can be quite powerful. Practice, Grasshopper, and learn.