Medieval philosophy was my area of focus too! Stanford Encyclopedia of Philosophy is very good - so is the Internet Encyclopedia of Philosophy. Fordham’s Inte

Medieval philosophy was my area of focus too! Stanford Encyclopedia of Philosophy is very good - so is the Internet Encyclopedia of Philosophy. Fordham’s Internet Medieval Sourcebook is an absolute godsend. Another important resource is the “Cambridge Companion to …” series. It’s paid (about $45/book on Kindle), but will provide you with everything you need to start work on the topic.