How To Use Download Manager In a proficient way? What are the options you always use and change to organize and make good and fast download?

to use IDM in proficient way it's better to specify speed limit for each download so that u can download & browse in same time or download more than1 file & arrange them by periority so the important one give it high speed limit

https://addons.mozilla.org/en-US/.../downthemall/

This is firefox add-on and too fast to get any kind of data from webpage . filter the file extensions and pause option also available.