Search engine optimisation (SEO) is the process of improving the visibility of a website or web page in search engine results pages (SERPs) by optimising the website content for specific keywords or key phrases. When a user enters a keyword or key phrase into a search engine, the search engine returns a list of websites that are relevant to the keyword or key phrase. The higher a website ranks in the SERPs, the more likely it is that users will click on it.

SEO can be done by incorporating relevant keywords into the website's title tag, meta description, headers, body content, and images. It can also be done by building backlinks to the website from other high-quality websites.

Here are the steps on how to do SEO:

1. Choose the right keywords. 

   The first step is to choose the right keywords. You can use a keyword research tool to help you identify relevant keywords that have a high search volume and low competition.

2. Incorporate keywords throughout your website content. 

   Once you have chosen your keywords, you need to incorporate them throughout your website content. This includes your title tag, meta description, headers, body content, and images.

3. Build backlinks to your website. Backlinks are links from other websites to your website.

   They are a signal to search engines that your website is valuable and trustworthy. You can build backlinks by guest blogging, participating in online forums, and submitting your website to directories.

4. Optimise your website for mobile devices. 

   More and more people are using their mobile devices to search for information online. Make sure your website is optimised for mobile devices so that it can be easily viewed and navigated on smartphones and tablets.

5. Keep your website content fresh. 

   Search engines favour websites that have fresh, up-to-date content. Make sure to update your content regularly to keep it relevant and interesting for your visitors.

6. Use social media. Social media can be a great way to promote your website and attract new visitors.

   Share your content on social media platforms like Facebook, Twitter, and LinkedIn.

7. Track your results and make adjustments as needed. 

   It is important to track your results and make adjustments to your SEO strategy as needed. You can use a keyword tracking tool to see how your keywords are performing and make adjustments to your content and backlinks accordingly.

SEO is an ongoing process. By following these steps, you can improve the visibility of your website in search engine results pages and attract more visitors to your website.

Here are some additional tips for SEO:

• Use long-tail keywords. Long-tail keywords are more specific keywords that are less competitive than short-tail keywords. For example, the short-tail keyword "marketing" is very competitive, but the long-tail keyword "marketing for small businesses" is less competitive.

• Use synonyms and related keywords. In addition to using your target keywords, you can also use synonyms and related keywords. This will help you broaden your reach and attract more visitors to your website.

• Avoid keyword stuffing. Keyword stuffing is the practice of using keywords too many times in a single piece of content. This can actually hurt your website's ranking in search engines.

• Use natural language. When you are writing your content, try to use natural language and avoid keyword stuffing. This will make your content more readable and engaging for your visitors.

• Keep your content up-to-date. Search engines favour websites that have fresh, up-to-date content. Make sure to update your content regularly to keep it relevant and interesting for your visitors.

By following these tips, you can improve your SEO and improve the visibility of your website in search engine results pages.