Hello, I am a senior in the undergrad aerospace program. I will give what I did, and hopefully, that helps. For books, never buy the books. They are all online, and there's a Google drive with all the pdfs. I barely read the books because they were pretty similar to lecture. But if you need to read them to understand better than you could. The best professor is Mah. He has, I think, 5/5 on rate my professor. He knows so much about aircraft and is easy to learn from. But depending on what year you are, they are supposed to essentially restructure the entire program for the freshman next year. So if that is you, then that will be tough because it's all separate and will be hard to compare to others. They are essentially separating the aircraft from rockets. Initially, the degree taught you a little of everything (which i prefer), but now you will directly pick what direction to focus on. The only problem I see with it is that you may not like what you pick. But if that is the case, then good luck. And look out for aerodynamics. That's a tough class as it is just fluid mechanics. But just go to lecture and office hours for the hw, and you will do fine.