I found this long document in the Lockergnome encyclopedia. The article is all about the history of Opera browser and other useful information about the browser. If you are an Opera lover, this article is worth a read.
You can also check out Opera Watch for the latest buzz about our favorite browser.
If you are not yet an Opera user, head to TnTLuoma.com to read a good article called 30 Days to Becoming an Opera7 Lover.