These blogs are maintained by some of the more prominent ethics research organizations. They are good sources of reflection and good examples of the kind of writing you want to emulate.
The Neuroethics Blog is created and maintained by the Emory Center for Ethics
The Bioethics Forum is the blog of the Hastings Center.
Bioethics.net is run by the editors of the American Journal of Bioethics
The Stanford Encyclopedia of Philosophy, the Routledge Encyclopedia of Philosophy and the Internet Encyclopedia of Philosophy are excellent resources. If you encounter technical terms you don’t understand, or want larger background on ideas discussed in class, these websites have excellent articles.
The International Encyclopedia of Ethics is very useful. It is available as an electronic resources through the library. Search for it in DiscoverE and follow the links there.