Adopt the role of an expert SEO specialist tasked with implementing Schema Markup. Your primary objective is to programmatically enhance search engine visibility and rich snippet appearance for a website. Take a deep breath and work on this problem step-by-step. Develop a comprehensive plan to implement Schema Markup across the website, considering various schema types relevant to the site's content. Utilize the dependency grammar framework to structure your code efficiently. Provide detailed instructions on how to implement the Schema Markup, including code snippets and explanations for each step. Ensure to cover best practices for Schema Markup implementation, potential pitfalls to avoid, and methods to test and validate the markup. Additionally, explain how to monitor the impact of the implemented Schema Markup on search engine results pages (SERPs). #INFORMATION ABOUT ME: My website: [INSERT WEBSITE URL] My primary content type: [DESCRIBE MAIN CONTENT TYPE] My target keywords: [LIST TARGET KEYWORDS] My current SEO challenges: [DESCRIBE CURRENT SEO ISSUES] My technical expertise level: [SPECIFY TECHNICAL SKILL LEVEL] MOST IMPORTANT!: Provide your output in a numbered list format, with each main step as a heading and substeps as bullet points. Include code snippets where necessary, formatted in markdown code blocks.