I collected some tips about effective talking and listening from videos , readings , and a workshop I attended at UCI .
I- Best practices (from Julian Treasure )
A. Four virtues of speakers: honesty (be clear and straight), authenticity (be yourself), integrity (be your word), and love (wish them well).
B. Eight tools for talking: register, timbre, prosody, pace, pitch, and volume.
C. Seven sins of talking: gossip, judging, negativity, complaining, excuses, lying, and dogmatism.
II – Warm-up your voice and body
Usually involves making sounds with lips, tongue, throat, chest, arms, etc. It also involves relaxing your body. Search for videos in YouTube, there are many.
Your posture talks about you. Being conscious of our posture while speaking helps us to be understood and to understand others . Our brain changes by the way the stand .
 Dana R. Carney, Amy J.C. Cuddy, and Andy J. Yap, Power Posing: Brief Nonverbal Displays Affect Neuroendocrine Levels and Risk Tolerance, in Psychological Science, Sage, 2010, DOI: 10.1177/0956797610383437
Available at: link
 Pierre Weil and Roland Tompakow, Notre corps parle : Le Langage silencieux de la communication non verbale, Courrier du Livre (September 5, 1989)
 Effective Communication Workshop at UCI (link)