I think the best tip is number 7. 

7. Ask … How? When? Why?It’s hard to answer these questions with a simple yes or no.

Once the individual being targeted in the conversation supplies more words and thoughts, a great conversationalist will utilize the content given and continue to ask open ended questions about the same content. The entire time, the individual being targeted is the one supplying the content of the conversation.

This means suppressing your ego and listening to what people are saying. You’re not thinking about what you’re going to say next. You’re not thinking about how the person is wrong. If you’re really listening then asking open ended questions based on the content of what they are saying should be pretty easy.