In the past, we had written a guide on How To Open ISO Files, however, we have been receiving a lot of questions of late on how can a user extract or play an ISO or IMG file.
Both ISO files and IMG files are compressed folders like zip or RAR files which can directly be burned to a CD or DVD. However, since they are plain archive files you can also extract them to your local disk or mount ISO files as CD/DVD drives.
If you are looking to extract ISO files, you can either use WinRAR software or choose to use the open source freeware software called 7Zip. Once you have downloaded the 7zip software, just right click on the ISO file and then select the "Extract files" option from the menu to extract the contents of the ISO file to your disk.