How to use a PIVOT Query in SQL ?

Create a Table:
----------------------------------------------
 TABLE [dbo].[Salary](
    [SalaryId] [int] IDENTITY(1,1) NOT NULL,
    [EmpId] [varchar](50) NULL,
    [SalaryMonth] [date] NULL,
    [SalaryAmt] [decimal](18, 0) NULL,

//========================PIVOT Query=================================
  Select pv.* From
 (
 Select * From (
 Select EmpId,Month(SalaryMonth)Months,SalaryAmt From Salary
 ) sal
 PIVOT (SUM(SalaryAmt)for Months in([1],[2],[3]) )As p
  )pv