Search Engine Optimisation or SEO are the techniques used both on-page and off-page to make your website visible in organic search results. For more information check this article out -> What is SEO
SERP stands for Search Engine Results Page. This is a page from a search engine that displays the results from the query entered by the user.
A backlink or link is a clickable link either using the web address or anchor text to point to another website.
A link can also point to another page within your website. For instance the menu items on your page.
Citations contain online references to your business’s name, address and phone number (abbreviated to NAP). Search engines use these these citations, like links to your website, to categories and calculate the local authority of your business. They impact on your local search rankings and help people find a local business.