Can anyone describe the step by step process of recovery , backup and restore in sql server Can anyone  describe the step by step process of recovery via backup and restore in SQL Server 2008.  

If possible please include some examples.
Follow the links:

1.Backup Under the Full Recovery Model

http://msdn.microsoft.com/en-us/library/ms190217%28v=SQL.100%29.aspx

2.BACKUP and RESTORE Commands

http://msdn.microsoft.com/en-us/library/ff848768

3.Back Up and Restore of SQL Server Databases

http://msdn.microsoft.com/en-us/library/ms187048%28v=sql.100%29.aspx

Hope this will help.