Often your Internet Service Provider will provide a news server for you to connect to as part of your package. in addition there are hundreds of free and commercial news servers available on the Internet. Some of these servers contain a small number of targeted, private newsgroups. Others contain tens of thousands of groups.
An example of a small, private news server is the 'forums.talkto.net' server. This free server holds only a few groups, but these include the crucial 'xananews.support' and 'xananews.wishlist' newsgroups - where all things XanaNews are discussed.
You can create more than one Account for a particular server. You may want to do this for instance, to more easily separate German newsgroups from English ones; groups containing picture from general discussion groups, etc.