WordPress is a well renowned open source blog tool and publishing platform powered by PHP and MySQL. In beginning WordPress was used as a blogging system but has evolved as a complete Content Management System (CMS). There in an enormous pool of great plugins and creative themes available that can be used for a completely Classicus CMS or eCommerce website development. It can be downloaded and installed free of cost from WordPress repository. WordPress is easy to learn and gives full control over each element of website. You can re-arrange widget without editing code. It is also very SEO friendly with various inbuilt features and also supported by good SEO plugins for WordPress which you can apply as per your requirements.
WordPress considered to be the best platform to start web development journey since it consist some of the popular web programming languages such as PHP, HTML, CSS and little bit of JavaScript.