If you want to add new content to your existing static html website, then you have to create new html document and copy paste your existing template, add new content text and add new urls for the images which goes into the new html page. Also you have to upload the images to your server using some FTP software. Then you will have to update your menu with the new page url. Some times this makes updating your website complicated task and not fun at all.

Now below are some simple steps which you will have follow when you create new page to joomla website: