To begin using more receptive, conversation-friendly body language,
start small. Pick one or two areas to work on, such as body alignment or
eye contact. Learn to watch other highly social people for physical cues
that include others and indicate interest in continued interaction.
Build your repertoire of nonverbal communication enough, and you may find
yourself starting conversations without saying a word.
Further References
A great resource for further study of nonverbal communication is the
Nonverbal Dictionary of Gestures, Signs, and Body Language Cues. It can
be found on the Web at http://members.aol.com/nonverbal2/diction1.htm.
It includes scholarly research, social uses of nonverbal communication,
examples from literature and modern media, and much more.
If you want more information about proxemics and the study of personal
space,check out
http://www.bremercommunications.com/Proxemics_How_We_Use_Space.htm