Finding out how much memory SQL Server is utilizing?

Many time for a new DBA  hard to find how much My Server utilising memory? Here is explained a number of ways to find the memory utilized by SQL server.

By Using Performance monitor:

 Go to Start–>Run and type perfmon . You will find the following screen where you can see the total memory used(the pages/sec) by your box.

By Using DMV:
You can Query to sys.dm_os_memory_clerks DMV to find out Memory utilization by SQL server. To see how see the following query

select name,type, 
sum(single_pages_kb+multi_pages_kb) as MemoryKB
 from sys.dm_os_memory_clerks
group by name,type
order by memorykb desc

By using SQL Reports:

Right Click on SQL Server–>reports–>Standard Reports–> Memory Consumption

See the Following image.