SEO

Make sure your web site is discoverable by search engines.

Content

The most important part is your content. The text on your page should include what you would expect your users to search for.

Prioritize search friendly words and sentences in your page title, main (h1) header and text content.

But remember, a site that has interesting content often get links or references. Focus on writing information that has value for your visitors.

Technical

Writing semantic HTML also helps search engines understand your page.

Use heading tags correctly (<h1>-<h6>), add <title> tag to header with search friendly content and add <meta name="description" content="..."> with a description (this is the text that shows up on the search result screen).

Also make sure that your site links between all pages so that a search engine can crawl all pages of your site.

Make sure it gets indexed

An important note, you can make a site non indexed (i.e search engined will ignore the site) by setting meta tag or adding a robots.txt file.
This might be important during development, but don't forget to make it indexable when set live.

Sitemap

To make sure Google can index your site more effective, you can add a sitemap.xml file.

This file usually resides in the root of your site (https://www.itiden.se/sitemap.xml) but the important part is that it is referenced from your robots.txt (https://www.itiden.se/robots.txt) or linked to from Google Search Console.

Example robots.txt:

Google Search Console

Google Search Console is a great tool to follow up on search terms being used to find your site. Make sure your register your site and that people that should follow up search results has access.