The easiest way to do this is simply to use DejaNews' My DejaNews facility. However, you can also read newsgroups by using the 'News' facility that most Web browsers have. The details of how you do this vary considerably and for more information you should consult your technical support department. It is also possible to get newsreading programmes that are not part of Web browsers. You can try clicking here to launch your newsreader and read uk.religion.christian.
Some people only read newsgroups.
It is also possible to add messages to the group, or 'post' to the group. Again, the technical details of how you do this can vary. The Internet has its own system of etiquette, sometimes called Netiquette and it is important to understand these informal rules before posting to a newsgroup. DejaNews policy page has some links to pages that deal with Netiquette. Rules For posting to Usenet and Emily Postnews answers your questions on Netiquette are essential reading for anyone new to newsgroups.