Overpromises, underdelivers. Obvious, old concepts that may only work in a very limited array of scenarios. An office, with chairs and a table. Outside that environment you are on your own, pal! I can resume the book so you don't need to read it. Don't cross your arms when in a meeting or in public. Give a good handshake and keep eye contact, look friendly. If somebody looks weird during a meeting, give him/her something to handle and/or ask that person something in a polite manner to engage participation. That's it.
Let's now act all the same like robots. Glad I didn't pay for it.