Environment used

Ubuntu 18.04.5 LTS  GNOME 3.28.2   OS type 64bit

So, before I begin you should mainly have apache installed of above said version on your pc.

I assume here following:
1. the root folder of apache web server is /var/www/html/
2. the apache configuration folder is /etc/apache2
3. YOURUSERNAME is to be replaced by username of your ubuntu installation.
4. You know how to create/edit a file in text editor on linux
5. You know how to create a link on linux
6. You have prior experience of installing programs in linux via command line.
7. You can access your webserver via browser with
8. You know how to restart apache server on linux pc.