Queries :: Count On One Column

I have one table with one column that I am trying to extract data from.What I would like to do with the Column is split it into a few counts. The Column has numbers in it with KB usage. What i'm trying to do is count the amount of users that use say 0. Then have a column next to it that count say 500 >= 2000 and so on. This is completely baffling me as to why I can't seem to do this. I've even redesigned the database to see if I could fix this problem, but no luck I can build a query for this to be done sepearetly, but can't seem to find a way to put it into one query.

SELECT Count([test Usage].StaffPhoneID) AS CountOfStaffPhoneID, [test Usage].[Nov-14], [test Usage].[Nov-14], Count([test Usage].StaffPhoneID) AS CountOfStaffPhoneID1
FROM [test Usage]
GROUP BY [test Usage].[Nov-14], [test Usage].[Nov-14]
HAVING ((([test Usage].[Nov-14])=0) AND (([test Usage].[Nov-14])>=500));