What are some good ways of reading body language?

reading the body language is easy because the humain reactions are the same, and it gives us reactions with eyes and hands! 

i believe one of the most important of reading body language is eye contact. 

Body Language is very important as it helps people to read each other in a rihgt way, we can notice some body language during our conversation like:* Facial expression, eye contact, warm smile with handshake when first time meeting,body movements.