Install the version of EpubReader for your chosen browser
Then either Download the free ebook at Here or
just Read the ebook without downloading.
and the ebook will be stored in the Downloads Folder and also opened.
At the right and left edges you can turn the pages Forward → and back ←.
Clicking in the middle of the current page will show the buttons to the
Contents, Settings (SET WIDEMARGINS!), and Choose another ebook.