Kudos to http://en.wikipedia.org !I have yet to see another website which is a one stop
explanation for anything under the
sun. To top it up, it is free!It has different sections like arts, biography, history, mathematics, science, society,
technology and all portals. You can also navigate to see the current events, recent changes, recent articles, etc. But the best way to use wikipedia is type the topic that you need to understand. Up comes the write up on the topic. The language used is very lucid and the
explanation is pristine clear. I have used wikepedia to look out for technology words and there never has been an instance when I have been let down. Wikipedia runs on donations, so if someone is into philanthropy, he sure must donate to wikipedia, so that they can continue the good work. Long live wikipedia!