To understand SEO you have to think like the people who are looking for the product or service you offer. What words are they typing into the search engine? This will tell you what they are looking for. https://no.wikipedia.org/wiki/S%C3%B8kemotoroptimalisering Once you know what words they are typing you can use what is known as a free SEO tool to get more of these words. These SEO tools are basically a small program that helps you pick out more keywords and dig deeper into what your audience is looking
「ネットの道案内」／ホームページの検索にインターネットを道案内・・・