Another component is practice. Talk to lots of people. Get a job at Starbucks if you are really committed. Or go to toastmasters. Join any club that has lots of conversation.
Observation is also good. Watch people around you, and see how they speak.
Do not look to fiction, as someone else suggested. Almost all fiction these days is conflict oriented. The examples in fiction are almost always "what not to do", you'll learn to be an insufferable stalker.
There are also dozens of books on communication. Read a few.