Just a few things I request you stay away from:
• Life pro-tips and fun-facts. They have or have had their own threads.
• Stuff that everyone knows already. Don't teach us how to write a haiku.
• Complex topics that take a four-year degree to understand. If the prerequisites to the topic are simple include those in your post.
• Don't post videos from VSauce channels, or Khan Academy.
Feel free to ask/answer questions about any subjects covered in the thread as well. Videos are alright too.
e: Well this thread was regrettable. If you broke the first rule you can no longer think of yourself as better than V-subforumers, or I won't anyway. GTA_stu won for providing the only high effort entry.