Designed two detailed quick-reference posters comparing C# and Java, aimed at helping Java developers transition smoothly to C#. These posters provided side-by-side examples of syntax, keywords, operators, common datatypes, and unique features in each language. The materials emphasized usability and technical clarity, presenting complex programming differences in an easily digestible format. The comparison included detailed code examples, key differences in programming paradigms, and highlights of C# features unavailable in Java, such as LINQ, delegates, and dynamic runtime capabilities. These posters were a vital tool for developers, bridging knowledge gaps and fostering adoption of C# in cross-platform projects.