One beautiful piece of advice from the book: articulate your opponent's point of view so well, they'll want to say "I couldn't word it better" -- because that is how you know you have correctly understood the opposing view (a must before you start trying to argue against it).
A world-class philosopher of many decades (I read many of his books, highly recommend) shares his thoughts on this topic.
https://www.amazon.com/gp/product/B00AR354AQ