Searching for a topic comprehensively is challenging. How do you know when you have searched enough? What type of information is definitive? When do you stop searching?
All projects are different and there is no easy answer. What information is definitive can vary depending on the topic, the question, and the discipline. However, here are a few general rules of thumb:
Keep track of your search from the begining, especially if you are planning to publish your work. Your paper's Methods Section will require you to document:
Your project might benefit from using a citation managment tool. This softwarel helps you keep track of your citations, links to full-text, formats bibligraphies, and embeds your citations into your manuscript dynamically.