Before you can start any research on your topic, you must have a background knowledge of it. Reference sources (like dictionaries and encyclopedias) and websites can provide you with that knowledge.
This is important because:
Remember, background information is always a starting point for research, not an ending point.
Sometimes it can be helpful to browse journals in the field. This can help you develop topics and research questions as well as better understand how scholars write articles in the discipline.
Here are a selection of religious studies journals with information on how to access the full-text.