You can use
7zip or
winrar. The first one is free.
Assuming you use windows:
If you are using Win 7, then you can just double click on any font to open a window named <fontname> (TrueType). There is a button named install, and you can install them by clicking on that.
If you are using Win XP,
1.
Open Fonts in Control Panel.
2.
On the File menu, click Install New Font.
3.
In Drives, click the drive you want.
4.
In Folders, double-click the folder that contains the fonts you want to add.
5.
In List of fonts, click the font you want to add, and then click OK.
To add all of the listed fonts, click Select All, and then click OK.
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Nur Muhammad Shafiullah | Mahi