I've learned about in the communicating beyond words are:

Appearance & Dress

By a man's finger-nails, by his coat-sleeve, by his boots, by his trouser-knees, by the callosities of his forefinger and thumb, by his expression, by his shirt-cuffs - by each of these things a man's calling is plainly revealed. That all united should fail to enlighten the competent inquirer in any case is almost inconceivable. - Sherlock Holmes

The exact role of appearance and dress in the total system of nonverbal communication is still unknown. We do know, however, that appearance and dress are part of the nonverbal stimuli that influence interpersonal responses - and under some conditions they are the primary determiners of such responses. The way you dress and your physical appearance influence your interactions with others. They also have some bearing on whether you can persuade others. Therefore, it is important to dress professionally and to maintain a neat physical appearance.

Face & Eyes

The face is rich in communicative potential. It is the primary transmitter for information about our emotional state; it reflects interpersonal attitudes; it provides nonverbal feedback on the comments of others. Some say it is the primary source of information next to speech. For these reasons, and because of its visibility, we pay a great deal of attention to the messages we receive from the faces of others.