Once you have your goals and questions, you need to find reliable and relevant sources of information. Depending on your topic and industry, you may use different types of sources such as keyword research tools like Google Keyword Planner, Moz, or SEMrush; content analysis tools like BuzzSumo, Ahrefs, or SimilarWeb; audience research tools such as Google Analytics, Google Trends, or SurveyMonkey; and industry research tools like Statista, Pew Research Center, or HubSpot Research. These sources can help you discover what your audience is searching for, how competitive the keywords are, what types of content are popular in your niche and how your competitors are performing, who your audience is and what they care about, as well as get insights into the latest trends in your field.