In a nutshell, what it takes is to ask questions, have a positive, open attitude, encourage an open exchange of communications (both verbal and unspoken), listen to verbal and unspoken communications and share positive feedback.
Here are important details on each step:
1. Ask Questions
Building report is similar to interviewing someone for a job opening or it can be like a reporter seeking information for an article.
Relax and get to know the other person with a goal of finding common ground or things of interest. You can begin by simply commenting on the other persons choice of attire, if in person, or about their computer, if online, and following up with related questions.
For example, in person, you could compliment the other person on their color choice and or maybe a pin, ring or other piece of jewelry and ask where it came from.
In online communications, you could compliment the other persons font, smile faces or whatever they use, mention that the communication style seems relaxed and ask if he or she writes a lot.
Then basically follow up, steering clear of topics that could entice or cause arguing, while gradually leading the person to common ground youd like to discuss.
2. Attitude
Have a positive attitude and leave social labels at home (or in a drawer, if youre at home). Many people can tell instantly if you have a negative attitude or if you feel superior. So treat other people as you would like to be treated. And give each person a chance.
3. Open Exchange
Do encourage others to share with you. Some people are shy, scared or inexperienced in communicating and welcome an opportunity to share. So both with body language and verbal communication invite an exchange. Face the other person with your arms open, eyes looking into theirs gently (not glaring or staring), and encourage a conversation with a warm smile.
4. Listen
Be an active listener. Dont focus your thoughts on what YOU will say next. Listen to what the other person is saying and take your clues from there, while also noting the body language.
For example, if the other person folds his arms and sounds upset, you may need to change the subject or let him have some space and distance; maybe even try approaching him later on and excusing yourself to go make a phone call (of head to the buffet table or somewhere to escape).
On the other hand, if the other person is leaning towards you, following your every word and communicating with your as if you were old friends, BINGO. Youve built rapport!
5. Share People like compliments
So hand them out freely without over doing it. Leaving a nice part of yourself like a compliment is a good memory for the other person to recall - numerous times. Thats good rapport. But do be sincere! False compliments arent easily disguised.