To use for free calls you have to:
1 Add your google number to F&F
2 Add your outgoing number to F&F (It shows up in a white box at the top of the screen when dialing out) (That number also changes as you go to different areas, so if ya travel, that number changes and your outgoing calls will count against your minutes, so be aware of that).
3 Go to the google voice page, settings, and make it so your google number always shows on incoming calls (which means no caller ID).
1 Add your google number to F&F
2 Add your outgoing number to F&F (It shows up in a white box at the top of the screen when dialing out) (That number also changes as you go to different areas, so if ya travel, that number changes and your outgoing calls will count against your minutes, so be aware of that).
3 Go to the google voice page, settings, and make it so your google number always shows on incoming calls (which means no caller ID).