I have tried to provide maximum usage details in an easier way in the below link to use Internet Download Manager (IDM) Version 6.25.
In the below link I have talked about how you can download individual software programs from IDM, how you can download multiple image links at once using IDM and how you can download even YouTube videos using IDM.
Internet Download Manager (IDM) Version 6.25 has trial for 30 days. So you can use the software in your system for a time being and decide whether it suits or not. And then you can take decision of upgrading it to a paid plan. Free IDM is also useful to learn its usage and become friendly with the software.