As you may already know, not all Usenet servers are the same. The key items to a good server are good retention and completion rate. How to tell if your news server is a good one?
Here is a quick tutorial how to recognize different files that you may find on the Usenet and not to misplace them for yEnc.
PAR and PAR2 files can be used to reconstruct missing parts of the Usenet posting. If used correctly, they can be very handy.
This is a list of popular newsgroups sorted by popularity (number of articles). The popularity indicates on which topic people post the most articles. You may find this list useful for your own needs when searching for newsgroups.
By understanding how the hierarchies are structured you can significantly speed up a search of the topic of your interest.
If you encountered yEnc messages on the newsgroups you may have been disappointed because Outlook Express has no yEnc decoder. This article explains how to decode yEnc in Outlook Express and why is it so popular.