Scott Tusa is a teacher in the Tibetan tradition. He posted an article on impermanence that takes a broad look at the truth of impermanence and change. He includes ideas for noticing impermanence more clearly, in meditation and daily life. You can find his article here: Understanding Impermanence
Gil Fronsdal discusses the relationship between impermanence and clinging, with the understanding that greater insight into the nature of impermanence naturally leads to a decrease in clinging, and therefore of the suffering often associated with it. He also discusses several levels of impermanence that we can explore. You can find his discussion of impermanence here: Impermanence