Follow given instructions..
Let’s see how can you create a group of family or friends and send them free sms messages via google sms channels.
1. Go to http://labs.google.co.in/smschannels/browse
2. Click here to create a new sms channel for your friends or family, you will screen as shown below
3. Fill up the SMS Channel Name, Description, Category, Location and select google groups option
4. Fill out the remaining information and click the button Create Channel.
5. Click Invite Others as highlighted in the image below
7. After filling the above text message with mobile numbers, click Send invites to send sms channel link at the bottom.
You can send messages from google itself by clicking the channel you just created, you can send sms in many languages like Hindi, English, Tamil etc.
Hope it helps you for more information http://www.iyogi.net