When selecting a calculus textbook for self-study, James Stewart's Calculus and Larson's Calculus with Analytic Geometry are popular options. Michael Spivak's Calculus is noted for its advanced, theoretical approach but only covers single-variable calculus. Courant's "Introduction to Calculus to Analysis" is recommended for its two volumes, with Volume 1 focusing on single-variable calculus and Volume 2 on multivariable calculus. Larson's Calculus is considered suitable for beginners, particularly for AP Calculus, while Spivak and Courant are better suited for those seeking a deeper theoretical understanding. However, Spivak's and Courant's texts are not comparable to Larson or Stewart, as the latter focus more on techniques and applications. There are concerns about the weak treatment of epsilon-delta proofs and continuity in many calculus textbooks, including Larson's. Overall, Larson's text is viewed as a reasonable choice for beginners wanting to grasp concepts and applications of calculus.