Google Voice is a free service that allows people to choose a local number for voice mail and calling purposes. You can link your Google Voice number with your cell phone number and/or land line, so that you receive a call on all your phones and easily forward calls to transcribed voice mail when you are unavailable. Follow these directions to get a Google Voice phone number and start to use your account.
Steps
Log into Google
Go to www.Google.com/voice. Sign into your Google account. All of Google's products are now unified, so you will use the same username and password you use for Gmail.
If you do not use any Google products currently, then you will want to create a Google account. Go to accounts.google.com/NewAccount to enter your information and sign up.
Wait for the prompt on the Google.com/voice site that says "Set up your Google Voice Number."
If the prompt does not appear, click on the link that says "Get a Google Voice Number" on the left hand side of the page.
Choose a Google Voice Number
Click on the "I want a new number" button in the first set up prompt.
You have the option to set up the Google Voice account with your mobile phone number. That will keep you from being able to use some of Google Voice's features. You can always use your Google Voice number in conjunction with your mobile phone number.
Enter your zip code or area code to find an available local number. Click "Next."
If no phone numbers are available, enter a nearby zip code. Some large metropolitan areas do not have local phone numbers available.
If you are starting a Google Voice account in order to make free phone calls within the US or Canada, you can choose a phone in the zip code where your most-called family members or friends live. People who use land lines can call your Google Voice number free of charge, and it will ring on your cell phone number.
Choose your number from a list of numbers when you find a zip code with available phone numbers. Click on the circle next to the number and choose "Continue."
Remember that you must pay to switch your number in the future, so choose well.
Enter a Personal Identification Number (PIN) to access your phone number. Write down the number or make sure you can remember it.
Forwarding Google Voice Calls
Look for a prompt that asks you to link a forwarding number to your account. You can set up multiple numbers in the future, but this will allow you to connect your accounts now.
Enter the number of your choice. Select what type of phone it is.
Find the confirmation number on the next prompt screen. Click the "Call Me Now" button to verify it. Make sure your other phone is nearby so that you can answer it.
The confirmation allows Google Voice to ensure that you are using a forwarding phone that belongs to you.
Answer the phone. Type in the confirmation number when prompted.
Continue following the prompts to set up your personal voice mail message. One of the main advantages of Google Voice is that it offers digital voice mail with transcription so that you can get voice mail messages on your Gmail account.
Google Voice Number Settings
Return to Google.com/Voice to see your account history.
Change the settings by clicking on the gear icon on the top right part of the page.
Remove call screening. Save your changes.
Call screening makes the person who is calling enter their name. It also tells them that they are using Google Voice. Most Google Voice users prefer a transparent system that users do not know is pulled together using Google Voice.
Add your credit card information under the "Billing" tab. This is only necessary if you want to make cheap international calls. You can check the rates for calls to foreign countries before you call.
Download the Google Voice application onto your smart phone if you are using an Android, Blackberry or iPhone. Using the app will allow you to call from your Google Voice number, send and receive text messages on your phone and view history easily on your phone.
Load your contacts using Google Contacts. You can also import contacts from your phone or other sources.
Pay $10 to change your Google Voice number. If you move, paying the fee will transfer your history and your contacts. It will also keep your old number for 3 months while you transfer new information to your contacts.
Video
Things You'll Need
Google account
Local zip code
Mobile/land line phones for forwarding
Google Voice application
Credit card information (optional)
Google Contacts
Related wikiHows
How to Port Your Skype Number to Google Voice
How to Record a Call on Google Voice
How to Call Phones from Gmail
How to Place Phone Calls from Google Chrome
Sources and Citations
http://www.youtube.com/watch?v=zZ7fLYS-CE8
http://www.pcmag.com/article2/0,2817,2370905,00.asp
http://support.google.com/voice/answer/150640?hl=en