LEARN:
A map of physics:
http://www.vox.com/science-and-health/2016/11/29/13769152/physics-subdiscipline-video
Einstein:
Understanding Einstein's Theory of Relativity
Website to help you learn more:
http://www.einstein-online.info/elementary
Neil deGrasse Explains Wormholes and Blackholes
Special relativity, time dilation, length contraction
Stephen Hawking:
http://www.dailymail.co.uk/home/moslive/article-1269288/STEPHEN-HAWKING-How-build-time-machine.html
https://www.nasa.gov/audience/forstudents/k-4/stories/nasa-knows/what-is-a-black-hole-k4.html
Time Travel into the Future:
Time Travel Explained in 90 Seconds
Is Time Travel Really Possible?
Escape Velocity Two (the math!)