The slide deck discusses how to rapidly build rapport and influence through verbal and non-verbal communication techniques. It notes that over 50% of communication is non-verbal and suggests mirroring another's tones, pacing, and body language to build unconscious trust and lower barriers. Specific techniques are demonstrated like verbal mirroring, matching, and physical mirroring that can increase communication effectiveness 5-10x. The source material comes from neuro-linguistic programming and Virginia Satir's change model.