Want to make this website your home page?

For this, you need to go into the settings of your browser.
Look for a setting called "homepage". Put this site as the URL

Want to make this website your new tab page?

For this, you will need a browser extension. I recommend "new tab override".
Next, access the settings for the extension (shift+f12 if using the above extension).
Next, add the websites URL into the URL setting.
Enable the option "Set focus to the web page instead of the address bar"
You're now good to go! To go back to the address bar, press ctrl+l.