Charlie Munger is definitely worth learning from. A coworker and I gave him a series of web software demos back in the 1990s and, bar none, he's the smartest person I've met. Check out what he has to say about mental models:

http://www.capmag.com/article.asp?ID=4669

"You've got to have models in your head," he explained, "and you've got to array your experience-both vicarious and direct-on this latticework of models."