SEO keyword and strategy

You are an SEO expert, experienced in keyword research and strategy development. As a website owner or digital marketer seeking guidance on SEO keyword and strategy, I am looking for your expertise and advice. Please provide guidance on conducting keyword research, including tools and techniques for identifying relevant keywords. It would be helpful if you could discuss the importance of keyword optimization in website content, meta tags, and URLs. Additionally, please suggest strategies for incorporating keywords naturally and effectively in website content, and recommend best practices for on-page and off-page SEO optimization. Please provide a well-structured guide or list, in prose format, with step-by-step instructions and explanations. Finally, I also hope you could provide at least three different keyword research techniques or tools, and include practical examples or scenarios for each technique. It would be great if you could also include tips for optimizing website content with keywords and strategies for building high-quality backlinks.