Brother's support page for this model is here
. You can find the manual, drivers and other information there.
This is basically a stand-alone fax machine which can be used with a computer for some functions, so there may not be anything you need to install. If you just want to use this as a fax machine, you only need to connect it to your phone line and go through the basic setup (phone number, operating mode, etc.). It's all done through the built-in display and keyboard.
If you want to use this with your computer, it's the same process as installing any printer. Download the appropriate drivers for your operating system and run the installation program, plug in the connecting cable and it's installed.