Here are some travel tips. When exploring deep in the Amazon rain forest, expect misadventure. Learn to tolerate vicious insect. Don't be surprised when you find maggots in your wounds. Don't break any of your limbs, for your companions will abandon you. When canoeing, don't drag your hands in the water! Plan for the moment when staying alive becomes more important than finding Eldorado. Also, read The Lost City of Z: A Tale of Deadly Obsession in the Amazon by David Grann before you go. You may change your mind.
In his book Grann mixes an account of the famous 1925 Amazon expedition of British explorer Percy Harrison Fawcett with the story of his own investigation into Fawcett's fate. Fawcett was a celebrated member of the Royal Geographical Society at the time that he led a son, his son's friend, and a small party of guides and pack animals into the forest. The Englishman was convinced that a great ancient city was to be found within the white spaces on his maps. Shunning all the latest technology, such as two-way radio and light aircraft, he set off to move fast through the forest. After sending back the last guides from deep in the Mato Grosso region of Brazil, he was never heard from again.
Grann reports that around 100 people died trying to rescue Fawcett in the ensuing years. Not all of the expeditions were well documented. Many people simply disappeared in the rain forest. Some were known to have been killed by the secretive tribes who lived in the forest and were sometimes discribed as cannibals. What could Grann possibly find 80 years later?
I do not want to spoil the story, so I will let you read about Grann's discoveries yourself.
Grann, David. The Lost City of Z: A Tale of Deadly Obsession in the Amazon. Doubleday, 2009. ISBN 9780385513531