I am trying to figure out if i copy an existing html page within wordpress so as to serve as a template to play with. However I am not sure if it is feasible. 1. is it possible to copy an entire page from an existing website url to wordpress? 2. Is it possible to copy entire web page (example source code) or part of it into wordpress? Can someone please advise?
Yes, that it is possible. You can achieve that using a custom page template. After you add the required code for WordPress to be able to see that page as a valid page template, you can then add the HTML code from the source of your template. However, if the original template loads any CSS and JavaScript code from individual files, you'll also have to include these in your WordPress theme.