If you are a beginner to use WordPress, then let me tell you that it is basically a CMS (Content Management System) assistant that allows users to construct their websites even if they do not have sufficient knowledge about programming and web design. If you want to create a website, what you need to do is to purchase a domain name (with about 14 USD a year) and will then have to subscriber to a suitable hosting account (with about 10 USD a month). Then it will permit you to log in to the cPanel account of your website and establishes WordPress automatically.
Since WordPress is easy to use and install, most of the companies and businesses are using it to make their websites, though, it is provided with certain limitations. Design is already a preset factor as it does not allow users to modify much of its appearance. Also, features or functions are restricted and for this, you need to have different plugins in order to organize your site efficiently.
There are thousands of WP plugins available in the market but since my article is about top plugins, I am going to discuss a few best ones. The best thing about these sites is that they are always free to use.
All-in-one SEO
This WordPress plugin supports users to rank their websites higher according to the keywords on Google. It is free to use even though, it has paid version that involve social media optimization.