Operator Precedence and Associativity, The Julia Language, 2024 - Official documentation covering Julia's rules for operator precedence and associativity, which helps in understanding expression evaluation.
Think Julia: How to Think Like a Computer Scientist, Ben Lauwens and Allen B. Downey, 2019 (O'Reilly Media) - An introductory textbook chapter that explains expressions, operators, and their evaluation in Julia programming.