These are the topics that we consider essential for you to have mastered in preparation for you to be a brilliant A level physicist
Read this document and this one
"Surely You're Joking, Mr. Feynman!": Adventures of a Curious Character - Richard P. Feynman
For the Love of Physics: From the End of the Rainbow to the Edge of Time - A Journey Through the Wonders of Physics - Walter Lewin
The Physics Book: Big Ideas Simply Explained - Jim Al-Khalili
Why does E=mc2 - Brian Cox
A Briefer History of Time - Stephen Hawking -Quite a tough read but accessible
Dead Famous: Albert Einstein - Mike Goldsmith - an easy read that explains relativity very nicely
A level physics specification - OCR A (and a shorter 'at a glance' version)
The CGP Head Start to A Level Physics book is free on Amazon Kindle edition
Data sheet for A level physics
OCR A level physics Mathematical skills handbook
OCR A level physics Practical skills handbook