A good introduction to the vast world of standing poses is the simple tree pose, or Vrksasana. The tree pose is a good place to start because it requires the mastery of balance-- an essential aspect of the practice of yoga. If you are a little shaky when it comes to balance, try a few of these pointers before we begin.
When attempting to balance, it can be extremely helpful to focus on one point several feet in front of you, at a comfortable position. Focusing on one spot will help your body to center itself. The more you glance around the room, shifting your gaze, the harder it will be to balance. Another tip is to place a finger from one hand on your bellybutton. This also will give you the focus you need to stay calm, still and centered. If you're having trouble with the Tree Pose due to balance issues, try these tips as you practice.
First of all, start in standing position. Take a deep breath, anchor your left foot solidly on the ground, and lift your right foot with your hands. Slowly guide your right foot to rest on the inside of your left leg, as far up to your groin as is comfortable. Let the sole of your foot relax as it rests on your left leg. Relax your pelvis so that it is centered and neutral.
When you are ready, release your hand from your foot and anchor yourself deeper into the pose. Raise your hands above your head, if possible, and take a deep breath. Remain in the Tree Pose for about 30 seconds, if you're able, and then taking a deep breath, let your foot down slowly. Take several breaths in standing position, and when you're ready, repeat the process on the other side.
This exercise can be difficult when wearing socks, so consider taking your socks off for this one-- bare feet provide more traction for the Tree Pose, which can make it easier for beginners. Likewise, the exercise can be easier when done in shorts. Give these shorts a try if you're slipping.