For beginners interested in number theory, "Number Theory" by George E. Andrews is recommended for its general introduction and affordable price, despite having limited examples. "Elementary Number Theory and Its Applications" by Kenneth H. Rosen offers a broader overview with numerous examples and clear explanations, making it suitable for newcomers. Some participants suggest starting with online articles instead of textbooks, as many number theory books may feel like a collection of complex topics and unresolved problems. There is a notion that focusing on a specific area of pure mathematics, such as algebra or analysis, might be more beneficial. Overall, the discussion emphasizes the importance of selecting the right resources for learning number theory effectively.