Depending on your topic, you may be required to find primary resources. What makes a primary resource is different for the humanities and sciences, and sometimes they can be tricky to find, so please do not hesitate to ask for help if you need it.
There are several websites that offer access to primary resources. Here are a few that we've found helpful.
Primary sources are original, first-hand accounts. Secondary sources provide some analysis or interpretation of primary resources. Example:
Credit for graphic: http://dkit.ie.libguides.com/content.php?pid=493936&sid=4116692
You can often find primary sources online that have been digitized, and we have several books and databases that will help: