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 * [Classical Mechanics](http://www.physics.rutgers.edu/ugrad/494/bookr03D.pdf) - Joel A. Shapiro (PDF)
 * [Dynamics and Relativity](http://www.damtp.cam.ac.uk/user/tong/relativity/dynrel.pdf) - David Tong (PDF)
 * [Fluid Dynamics - Lecture Notes](https://www.iare.ac.in/sites/default/files/FD_IARE_LECTURE%20_NOTES.pdf) - Shiva Prasad (PDF)
-* [Fundamental Physics for Level 0 - Teaching Guide](https://oup.com.pk/media/teaching-guides/Fundamental%20Biology%20Physics%20Chemistry/Fundamental%20Physics%20for%20O%20Level%20Teaching%20Guide.pdf) - Ian Collins (PDF)
+* [Fundamental Physics for Level 0 - Teaching Guide](https://web.archive.org/web/20170701234819/https://oup.com.pk/media/teaching-guides/Fundamental%20Biology%20Physics%20Chemistry/Fundamental%20Physics%20for%20O%20Level%20Teaching%20Guide.pdf) - Ian Collins (PDF)
 * [Fusion Physics](https://www-pub.iaea.org/MTCD/Publications/PDF/Pub1562_web.pdf) - (PDF)
 * [GRE Physics Test Practice Book](https://www.ets.org/s/gre/pdf/practice_book_physics.pdf) - (PDF)
 * [Introduction to General Relativity](http://www.staff.science.uu.nl/~hooft101/lectures/genrel_2013.pdf) - Gerard ’t Hooft (PDF)