They are really good. He writes like a grandpa who happens to be really smart and fun. If you’re new to investing, Warren Buffet is America’s greatest investor (I once called him the Snoop Dogg of investing). He still eats at the same restaurant and drives an old truck. He runs a fund call Berkshire Hathaway and writes a great letter detailing his successes and failures every year.
Read them. They’re a great way to learn why he makes his choices and how to evaluate investments.