If you are looking for general information about ROTH IRA guidlines, try publication 590, available at the IRS website.
If you are looking for help in setting up a ROTH IRA, there are many banks and other entities who act as custodians and are willing to help.
If you are asking about investment advice, refer to some of the past discussions on this board. For example,
http://benefitslink.com/boards/index.php?showtopic=26516