Here are some DIY SEO strategies and tactics for conducting SEO specifically for ecommerce websites. Use sitemaps wisely. Make sure you have a site-wide sitemap that categorizes your merchandise and list all the essential products that you wish to sell. You must also be sure that your sitemaps are dynamically updated to remove all products or merchandise that have been sold out or discontinued. The sitemap also needs to get dynamically updated with new products as they get added to the online store. This will ensure that google will capture these updates when their Googlebots crawl out to your website and index all updated material. If your website and sitemap is not updated dynamically, then, your website will end up with broken links and 404 missing page error codes which can damage your reputation online and penalize your search with Google's search engine.
Use Google's Search Console and Google's webmaster tools to keep track of the success of your website through the dashboard and statistics and website testing. Google's Search Console provides for a wealth of information, site data, and statistics that is very valuable for an online storefront or ecommerce website.