There is a good first series. I bought two books about quantum physics and a brief history of time. This introduction is fairly popular and somewhat theoretical. I just finished the college entrance examination this year, and I can understand some of them, but I can't understand others. It involves very important quantum mechanics and relativity in physics. There is also a book about the quantum age, which is biased towards events in various physical ages. From the end of the 19th century to the present, there are not many practical theories, but God is throwing a sieve (that word can't be typed by mobile phone) > Quantum mechanics is also very good. If you download a book, you can use Thunder, which is very convenient, but downloading a book is very different from buying a book. I read an e-book and bought it. Because there are no illustrations in e-books, when it comes to experiments, pictures are very important. I suggest you go to a bigger bookstore to buy books. There are many popular science books, which are easy to find, and there are unexpected good books. I strongly recommend going to the bookstore. I saw a book about physics experiments in Xinhua Bookstore before, all of which are major experiments in today's physics, such as Millikan oil drop experiment, but I forgot the title. I will help you when I go to school on August 5. Also, if you have any good books about physics, can you recommend them to me? I like it too. I have something to do recently, so I can't help you find a physics book. Please forgive me. If I can, I'll leave you a message in a few days! Say sorry again.