Trying to figure out how to install my Brother printer.

[finallyIgotLinuxed]

It "sees" the printer and asks for drivers. I've downloaded the .gz file into my download file under home but can't get at it. terminal states no file or directory. try to follow the directions to install from terminal. But I'm so primitive at Linux commands.
These are there install notes.

Step1. Download the tool.(linux-brprinter-installer-..-.gz)
The tool will be downloaded into the default "Download" directory.
(The directory location varies depending on your Linux distribution.)
e.g. /home/(LoginName)/Download
Step2. Open a terminal window.
Step3. Go to the directory you downloaded the file to in the last step. By using the cd command.
e.g. cd Downloads
Step4. Enter this command to extract the downloaded file:
Command: gunzip linux-brprinter-installer-..-.gz
e.g. gunzip linux-brprinter-installer-2.1.1-1.gz
Step5. Get superuser authorization with the "su" command or "sudo su" command.
Step6. Run the tool:
Command: bash linux-brprinter-installer-..- Brother machine name
e.g. bash linux-brprinter-installer-2.1.1-1 MFC-J880DW
Step7. The driver installation will start. Follow the installation screen directions.
When you see the message "Will you specify the DeviceURI ?",
For USB Users: Choose N(No)
For Network Users: Choose Y(Yes) and DeviceURI number.
The install process may take some time. Please wait until it is complete.

thanks for your response in advance.
Edit: Solved.