I am placing this post to simplify and give my personal methods of air manipulation.
Basic level one bending.
The easiest method is to use you own breath, you will use your own breath as a tool to bend the air around you.
blow gently with your mouth preferably while outside (can work inside too) and with your mind focused use your hand you direct and swirl the air causing other air around it to move.
This technique is more intricate because you are using your ki, chakra what ever you call it as the raw device for air bending.
create thin, flexible and strong strings connected to your fingers. Make them an extension of your arm, let every pulse of movement have a reaction with the air and keep focus with your mind the exact results you want. With no focus this will not work. you are to operate like a puppet master letting the air be your puppet.
simply combine two techniques mentioned before.
This is where the fun begins. Place your hands clasp as if in prayer and begin to manipulate the earth as if performing geokinesis, make it rise and mold with the air while using your third eye to manipulate the air further to create strong gusts of wind. This MUST be done simultaneously.