There is a huge amount of information available for free on the internet, some of which can be very helpful for academic research. Websites, documents, reports, blogs, forums, videos, and more can be published and updated more quickly and frequently than article or book. In addition, anyone can create and publish content online, which gives a voice to opinions and ideas that may be not be published in a journal or book.
These websites provide resources and information for your field of study:
Professional organizations in your field can also be a great source of information. Here are a few well-known groups in this field: