At first, a newsgroup may appear as a group of people that has something to do with news or current events. This is sometimes correct but it is more appropriate to tag newsgroups as discussion forums where messages and comments can be posted by different people in several languages situated in various locations in the world.
A newsgroup usually focuses on a certain topic, wherein message postings are allowed to share ideas and thoughts about the subject. Postings usually expire in a certain period of time or are managed by a newsgroup administrator or moderator. A newsgroup administrator manages the message postings and filters them if necessary, while a newsgroup operator is the one approving the message posting before it will become available to the public. There are times that you need to subscribe to a certain newsgroup before you can post or read messages. Most commercially available sites maintain their own news server to determine the ideas and feedback of customers about their products.
There are also newsgroups intended for certification exams, such as Sun Certified Java Professional (SCJP) program. Topics discussed in these newsgroups are usually about the experience in taking the exam and some pointers on how to successfully complete it within a specific time frame. There are also some who post possible questions with answers that may be encountered by future exam takers. Some also suggest training schools that are proven effective in providing comprehensive courses about Java programming and books or references that helped them in reaching their SCJP goal. You can search for an SCJP newsgroup on the net and take that first step on becoming a Sun Certified Professional.
Information overload? This two words best describes the Internet, as the World Wide Web is now considered as the primary source of information of almost everything under the sun. The Internet is like a repository of millions of books, manuals, encyclopedias, magazines, journals and other reading materials that can only be seen previously in libraries and museums. Because of these tons of information, web sites made use of PDF files to compress data and make it easier for the public to access and download.
Not only that. PDF files can now be purchased online. If you would like to buy a book but you have determined that copies have run out after visiting your favorite book store, then you may want to search the web if there is an available copy for you. There are times that you can actually purchase a copy of a book online but then it takes like a couple of business days before you receive it depending on your location. The easier and faster way is of course to buy the PDF copy of the book that you can always print or save on your computer, depending on your preference.
PDF is also used when conducting reviews and tutorial courses for certification exams, such as the Sun Certified Java Professional (SCJP). Usually, SCJP PDF files are available when you purchase study guide packages on the web. Though some web sites offer SCJP PDF files for free, it is still advisable to purchase reading materials with comprehensive content that will bring you all the way up to the list of SCJP passers.