Question how do i open the fire fox browser can i get phone teck support ?

Any 'phone tech support' is not associated with Mozilla, but is a separate group. Note: Some of them could try to hack your system

This website is the official support for Mozilla Firefox.

The people who answer questions here, for the most part, are other users volunteering their time (like me), not Mozilla employees or Firefox developers. If you want to leave feedback for Firefox developers, you can go to the Firefox Help menu and select Submit Feedback... or use this link. Your feedback gets collected by a team of people who read it and gather data about the most common issues.

You can also file a bug report or feature request. See File a bug report or feature request for Mozilla products for details.

i dont know if im fully downloaded to use fire fox

If the program you used to download Firefox shows 100% and/or download complete, Then the file download was successful.

Open your file browser and locate the install file. Then right-click and select Open.