Quantum Country is a nice resource. Also Aaronson. But for me what really helped was Quantum Computing Without the Physics by Nannicini. Aaronson is not formal

Quantum Country is a nice resource. Also Aaronson. But for me what really helped was Quantum Computing Without the Physics by Nannicini. Aaronson is not formal enough or really a textbook to teach and explain quantum algos like Simons (a good first algo) or Grover. It is an amazingly fun book though. https://arxiv.org/abs/1708.03684 https://arxiv.org/abs/1708.03684 Nielsen and Chuang is the standard textbook but was not useful to me sadly. I wouldn’t recommend it to a beginner outside the framework of a course.