Explain step-by-step how to implement a singly linked list in C, including [MEMORY ALLOCATION], [NODE STRUCTURE], and [TRAVERSAL]. Provide code snippets for each step, ensuring clarity for beginners. Cover best practices like error handling for [DYNAMIC MEMORY] and how to avoid [MEMORY LEAKS]. Also, demonstrate how to insert, delete, and search for nodes, with examples for [CUSTOM DATA TYPES]. Keep explanations concise but thorough.