For upper-level undergraduates seeking introductory textbooks on Quantum Field Theory (QFT) and General Relativity (GR) with full solutions, the discussion highlights the challenges in finding such resources. It emphasizes that while problem books exist, they typically do not serve as primary learning texts. Instead, it is recommended to use a combination of pedagogical texts alongside problem books to enhance understanding. Notable mentions include Lightman et al. for GR problems, which are considered challenging, and Hartle's text as a solid introductory resource. For QFT, Atkinson's four-volume series and Maggiore's textbook are suggested, with the acknowledgment that solutions are rare. Additionally, the importance of working through problems independently and seeking help when needed is stressed, rather than relying solely on textbooks with complete solutions.
