The article Wikipedia:Plain and simple is a summary that explains the basics of what you need to know to start editing quickly and avoid major stumbling blocks.
Don't worry if you don't understand everything at first. As time goes on, you'll learn how to be a great contributor to Wikipedia!
If you do get stuck, there are volunteers available to answer your questions, see asking for help for more information.
1565 – The first recorded naval battle between Europeans and the Japanese occurred when a flotilla of samurai attacked two Portuguese trade vessels at the Battle of Fukuda Bay in Nagasaki.
Krishna's Butterball is a large granite balancing rock that rests on a short incline in the coastal resort town of Mamallapuram in the Indian state of Tamil Nadu. It is approximately six metres (20 ft) high and five metres (16 ft) wide, with a mass of around 250 tonnes. It is balanced on a slope on top of a 1.2-metre-high (4 ft) plinth that is a naturally eroded hill. Krishna's Butterball is part of the Group of Monuments at Mahabalipuram, a UNESCO World Heritage Site built during the 7th and 8th centuries as Hindu religious monuments by the Pallava dynasty. It is now a popular tourist attraction.