Meta Keywords & Meta Descriptions - Overall Site
If you're new to Joomla, you may have not taken then time to look for where you place your meta keywords or meta description of your site. Meta keywords are tags placed within the <header> of your website and tells search engines a brief list of important keywords that relate to the content of your website. For example, if you run a website that sells bonsai trees, you'd probably include meta keywords like "online bonsai tree store, bonsai tree care, bonsai trees, topiary, hobbies, gardening". Don't be extremely specialized with keywords, and try your hardest to use keywords that you know people are searching. However, don't use something like "store" or "trees" which are probably overly used. After all, you don't want to have to compete for rank with stores that don't sell anything related to bonsai tress, or websites about forestry.
To learn more about meta keywords and search engine optimization, read up here: Optimizing Search Engine Results with Meta Keywords
Meta descriptions are where you write the short paragraph that will show up below your website name in search engines. Think of this as your ten second website biography. It should clearly explain your website, include a meta tag keyword phrase, and be free and clear of typos and misspellings. Don't make it too long winded, as most search engines will cut them off after a certain amount of characters. Anything between 150-500 characters is usually pretty good for a meta description.
But where do you enter this vital information in Joomla? Simple! Go to your "Global Configuration" within the "site" tab at the top of your Joomla backend. Take the time to also make sure that you fill in your site name if you haven't either!
Not sure how to navigate the Joomla Backend? Don't fret, just check out: How to Navigate Joomla's Backend