I've a simple technique that's wonderful for getting color, dialogue that's realistic, and learning different perspectives. Years ago, at a food court in a mall, I found a perfect table where I could sit with my then clunky, big laptop (notebook PC) and write. I don't care much about what other people talk about, but I noted that there was rich dialogue being shared whether I wanted to hear it or not. Nothing could be further from me than being some teenage girls talking about other girls who went by. Vicious, funny, some great throw away lines. This provided some great scenes for characters very much unlike me, but very realistic. While I might have dreamed up something passable, this was instead, realistic, jaded and contemporary. Another time two old African-American guys were talking about hard times, scraping by and drinking. They shared a marvelous sense of humor and a great outlook, spiced with some past mischief and salted with old fashioned period slang. The timing of comments, the natural 'punchlines' to observations, and points of view were great. You might not need something now, but nothing should be wasted.