Create a Template Test Case, which will contain similar 
steps.Call that template where ever you feel necessary, 
that means; if you feel that same steps you need to write 
again, call there that template.

Thanks Rudraneel.
Should Template Test Case has Test case Id or not?
Reply me as soon as possible.

Hi,

I think it is good to have all the steps present in the same
test case instead of linking or pointing elsewhere because
of the reasons below
1:A test case should be self sufficient.Should have all the
details of execution in the test case itself.
2:What if the create user steps change in future and they
are not the same as edit user?
3:What if for some reason the tester of edit user does not
have access to create user cases?
4:When we link one to other we always have dependency and
when one changes we have to be cautious about the other.
5:Can create maintenance problems
So my suggestion is not to have links.
I also have a suggestion about testing if you do not mind.
There is one amazing site which can make your testing easy.
http://www.testersdesk.com/
There is one tool Person Name Generator which can generate
user names which can be quite useful for your automation and
manual testing. There are a whole bunch of other test data
generation,test case design and other useful tools available
for free at one place. Have a look!