Where to start will depend on the research you are doing and the type of information you need to find.
A great place to begin is to check out resources that may help you understand the larger concepts or underlying issues of a topic. Here are a few suggestions:
Launched as a new offering in 2017, Academic Writer combines sophisticated learning and teaching tools, writing and content processing technology, and full integration of the APA's Style Manual. Why go to third party sites when everything you need is now available from the source! Take me there now.... and check out the brief video below: Academic Writer for Students.