A good sitemap acts as a roadmap of your website that leads Google to all your important pages, so they’re a vital part of a good SEO strategy for your website.
What is an XML sitemap and why should you have one?
Yoast Blog
Get started with sitemaps by learning what they are and how they can help your SEO.
Managing your sitemaps using the Sitemaps Report
Search Console Help
Google guide to managing your sitemap in Search Console including how to submit, resubmit, and delete a sitemap.
Submit Your Sitemap to Search Engine
Yoast Blog
A monster guide that covers submitting your sitemap to Google, Bing, and more.