I’ve listed a few points below that are useful to know (the numbers in brackets  correspond to the numbers in the diagram):

Bai Hui (1):

The Crown Point of your head. While doing taijiquan, standing postures, or during meditation, you should feel as though you are suspended from above by  the bai hui. The bai hui is an important fifth gate in regulating qi (along with the lao gong (palm) and yong quan (sole of the foot)) .

Jian Jing (2):

The Shoulder Well. Relax your shoulders; let them sink, but not slump. Many of us have a tendency to hold tension in our shoulders. To become aware of  the difference between tension and relaxation, lift your shoulders — really stretch them upward — to your ears and then let them slowly sink.

Qu Chi (3):

Pool at the Bend

Zhong Fu (4):         

The Middle Mansion: the spongy region between the shoulder and chest. Do not push the chest out or collapse it: discover equilibrium by relaxing your chest and liberating tension from your upper body.

Qi Men (5):              

The Cyclic Door. This region will become tense if you breathe into your chest; consciously breathe into your belly, let the abdomen expand and contract, pulling your diaphragm down, which relaxes the rib cage downwards and in towards the spine.

Zhang Men (6):

The Bright Door. Relax and keep this region elastic. Abdominal breathing relaxes this region.

Ming Men (7):

Life’s Door (or The Life Gate): located on the mid-line of the lower back (within the small of your back), this is the center of prenatal chi or innate life-force.

Qi Hai (8):

Sea of Qi: an important meridian point in the conception vessel.

Qi Chong (9):          

The Qi Pouring (kua). Relax into your pelvis — the inguinal crease — and sink downwards as if you are lowering yourself onto a stool directly beneath you. Do not tuck your pelvis; rather, find equalibrium between tipping forward and sticking your rear backwards. As you sink into this point, and into the inguinal crease (the kua) try to sense that your ming men region (the small of your back) has flattened outward.

Lao Gong (10):

Palace of Toil (interestingly, lao gong also means husband in  Mandarin: do women have men in the palm of their hands?). Located where the tip of the middle finger falls when a loose fist is made. A major gate where the body’s qi is regulated.

Hui Yin (11):

Meeting of Yin: located in the center of the perineum (males: in between the anus and the scrotum; females: between the anus and the posterior labial commissure).

Chang Qiang (12):

Long Strong: located Midway between the tip of the coccyx bone and the anus.

Huan Tiao (13):

Jumping Round

Feng Shi (14):

The Wind Market. When performing standing meditation, the feng shi point is at the tip of the middle finger.

Wei Zhong (15):

Bend Middle (or The Popliteal Center). Bend your knees slightly. Maintain an arch between your legs. The knees should not be turned out.

Yong Quan (16):

The Bubbling Well. Center your body weight over this point, which is just behind the ball of the foot. A major gate where the body’s qi is regulated.