Buffett will likely have more to say later, but investors can learn a lot just from watching his actions.One of the things that makes Warren Buffett such a respected investor is that he's happy to share investment lessons with anyone interested.His annual letters to shareholders are full of ideas about investing philosophy, mistakes made (and learned from), and usually a good turn of phrase or two. And as an investor in the public eye for nearly 70 years, Buffett has never shied away from an opportunity to ...