Evaluating the information that you find is a critical part of doing research. This page lists resources for two very good strategies: the SIFT Method and Lateral Reading.
Lateral Reading is the best way to evaluate information, but it requires time and skill. It's the approach used by professional fact-checkers. The Stanford History Education Group provides curriculum for teaching the technique in classrooms, and provides an introduction to the concept in the video below.
Young adult author John Green partnered with Stanford History Education Group to create a series of videos on navigating online information for the popular educational YouTube series Crash Course.