This course provides a comprehensive introduction to the principles and practices behind designing and implementing programming languages. Students will explore the foundations of formal languages and automata, followed by in-depth study of lexical analysis, parsing, semantic analysis, and code generation. The curriculum also covers key aspects of compiler design such as intermediate code representation, optimization techniques, and runtime environment management. Advanced topics, practical language tools, and real-world case studies offer learners hands-on insight into modern language engineering and future trends in the field. Ideal for those interested in compilers, interpreters, and the inner workings of programming languages.