Are you struggling to get your head around the subject of SEO? Not really sure what a search engine is and how it affects your website?

First Site Guide share their guide to search engines and website optimisation in the infographic below.

It includes some useful search engine market share stats from around the world.

Google is the dominant force in most countries. They have an 80% market share globally, and a whopping 90% share here in the UK. Other contenders are Bing and Yahoo.

It then moves on to explain how search engines gather and process information, and how that ties in to your website and keyword rankings.

Hope the infographic helps!