Wikipedia is great collection of information, you can get details information of anything in the world in all language, As it is world most popular and leading company to provide great and huge collection of all information related to science, technology, historical, geographical, chemical, physics, country wise and many more you will find any information on this Wikipedia, I was using this service in information collection used for my projects, tutorials and essay in my works, really good knowledgeable website to gives information in details for free to all over the world. As is really important for School and college student to get information instantly.