Internet Download Manager(IDM) is a best software by which we can download youtube videos. It is also simple to install by inserting disk and press install. Then mark the extension of IDM in chrome. After that, open YouTube, there you can see an icon of IDM at the top of the video. We can download videos by clicking that icon. IDM provides us to download different qualities of videos as per the resolution. We can easily understand about IDM. There is no difficulty in it.