If you want to see the contents of a zip file before downloading, you may click on 'Preview' button.

You may edit categories, delete and add new categories in the main IDM window. IDM suggests the category and the default save folder according to file type. IDM lets you associate your downloads with IDM categories. If you click on 'Start Download' button, IDM will start downloading the file immediately. If you click on 'Download Later' button, URL (web address) will be added to the list of downloads, but the download process doesn't start. If IDM has taken over a download, it shows the following dialog. The list of file types/extensions to download with IDM can be edited in 'Options→File Types' IDM dialog. IDM takes over a download if its type matches the list of types/extensions. In this case you don't need to do anything special, just browse the Internet as you usually do. If you click on a download link in your browser IDM will take over and accelerate this download. IDM monitors clicks in Chrome, Internet Explorer, Opera, Mozilla and many other browsers. There are several ways to start your downloads with Internet Download Manager.

Using microsoft download manager