WordPress is a free CMS that is used to make blogs and websites. It is an open source CMS and made with PHP and MySQL. It is the most popular CMS and powers 33% of the web, from hobby blogs to the biggest news sites online. There are thousands of plugins and themes that are available to use with WordPress. It’s so easy to use that anyone can handle it.
Wordpress is made up of three parts-

The number 1 Admin area, which is used to manage and control the website administration and this is the part of the back end.
The second one is Includes. It contains everything that is needed to run the WordPress via the front end you can also call it the core area of WordPress. It consists of all common files.
The third one is Content where you can use and define your plugins and themes with your custom code. This area is for user-defined code.
If you ever want to add extra functionality to your blog or site, Either its front end or backend, you should always add or modify the wp-content area which includes the plugins and themes.
It is highly recommended not to edit or modify the Admin or Include area.
If you face any problem or issue regarding your WordPress blog or website it’s all related to your wp-content area and the issue may be due to the old or outdated code in a plugin or theme file.

Here you can explore topics related to WordPress-

WordPress Problems and Issues

WordPress Tutorials

WordPress Themes

WordPress Plugins