If you are having trouble downloading a Raspbian image, use the torrent files with a bittorrent client (it's faster and more reliable).
To "install" it, just write the downloaded Raspbian image .zip file to your SD card with Etcher. There is no need to extract the image file or format the card before writing. Just run Etcher, select the Raspbian file you downloaded, select your SD card and write.
My mind is like a browser. 27 tabs are open, 9 aren't responding,
lots of pop-ups...and where is that annoying music coming from?