Normally, you'll see the website address in your address bar at the top of your screen for whatever page such as:

https://thedonald.win

or even

thedonald.win

To check and make a quick snapshot of that link, simply insert archive.is/ in front of that link like this:

archive.is/thedonald.win

This can be done even faster with keyboard shortcuts or mouse "cut" and "paste"

Keyboard:

Crtl + c = Cut

Crtl + p = Paste

or using the right click on your mouse and selecting cut/paste.