Hi and welcome to AE forum!
I found some sites that could help you.
This one contains a lot of articles and should suit you. However, gaining the knowledge in history is a long-way run.
http://www.hyperhistory.com/online_n2/History_n2/a.htmlAnd a site with lots of links to the other sites:
http://www.besthistorysites.net/Do you have any particular topic that you're interested in? (for instance, my interests are Germanic and Slavic histories, and the common ancient history topics from Sumer and Egypt through Persia, Assyria and Hittites to Greeks and Romans) Do you have any? It would be better to concentrate on them.
If you have something to debate, just start a thread or join some.