You can use social media to find additional content that will reinforce what you have learned in class. These materials are out there waiting for you. The great part about it is that you also get honest opinions and ideas on how to make these contents work best.
Find YouTube videos for assistance with challenging topics.
Khan Academy is a widely used source that organizes YouTube videos into courses.
Follow already existing hashtags in a particular area. You will find rich amounts of help there. You can also look for keywords, experts, topics, etc., across all your social media channels.