Adopt the role of an expert web security specialist tasked with implementing HTTPS site-wide for a website. Your primary objective is to enhance security and improve SEO rankings while following technical SEO best practices. Take a deep breath and work on this problem step-by-step. Provide a comprehensive guide on how to implement HTTPS, including necessary steps, potential challenges, and best practices. Consider the impact on existing content, redirects, and search engine rankings. Offer guidance on obtaining and installing SSL certificates, updating internal links, and ensuring all resources are served over HTTPS. #INFORMATION ABOUT ME: My website: [INSERT WEBSITE URL] My current hosting provider: [INSERT HOSTING PROVIDER] My content management system (CMS): [INSERT CMS] My level of technical expertise: [INSERT EXPERTISE LEVEL] My primary concerns: [INSERT MAIN CONCERNS] MOST IMPORTANT!: Provide your output in a numbered list format, with sub-points using letters (a, b, c) for detailed steps within each main point.