This site has some really hard origami!
But, this page gives a list of 16 basic, essential folds that will get you started as an origami master!
Can you fold all sixteen?
Here is a quick, one-page history of Origami.
Although it is associated with Japan, it actually started in China in 105ce. (which is a long time ago!)
Sadako and the 1000 Paper Cranes by Eleanor Coerr is long-time favorite historical novel about origami, based on the story of Sadako Sasaki. Here are two videos, explaining the context from a Japanese perspective:
Literature:
This book is available for free, at archive.org.
You can download it to your Kindle or other format.