I'm a first year university student engaged in my first economics (macroeconomics) course, and, naturally, it isn't very extensive and makes use of a colorful textbook. Though I've been learning quite a few things, I can't help but feel that the explanations provided are too blurry. There's an ongoing attempt by the author to avoid going into technical explanations, which puts me off because that's exactly what I'm looking for. In other words, there's a lack of rigor. Could someone refer me to a source (a book, an internet website, anything) that might satisfy me? I want clear, concise, serious, and not shy of being technical explanations. Thanks in advance.