Primary Resources

This link will direct you to the Newton's First Law section of the Openstax college physics textbook;

Here is a concise explanation of Newton's first law;

Newton's First Law explanation and examples - https://www.physicsclassroom.com/class/newtlaws/Lesson-1/Newton-s-First-Law

Newton's First Law explanation and examples - https://www.physicsclassroom.com/class/newtlaws/Lesson-1/Newton-s-First-Law

This NASA video introdcues Newton's First Law of motion with many examples; 

https://www.youtube.com/embed/Q0Wz5P0JdeU

This video from Veratasium explains inertia by discussing why the Earth spins; 

https://www.youtube.com/embed/TQxeutcYP6I

Watch Doc Schuster's inertia video for further explanations about Newton's 1st Law; 

https://www.youtube.com/embed/cliJbHYpNic

This educational film from 1960 called Frames of Reference discusses/illustrates a very important part of Newton's Laws and will give you a very good "intuition" on inertial reference frames; 

https://www.youtube.com/embed/aRDOqiqBUQY

An Astronomer answers questions about Newton's 1st Law at the H.R MacMillan Space Center; 

https://www.youtube.com/embed/pxWHWOYVov4

Newton's Laws of Motion (1): The Law of Inertia https://www.youtube.com/embed/Q0Wz5P0JdeU