Helpful Resources online for both IGCSE, O Level, and A Level Physics will be shared below!
Isaac Computer Science: https://isaaccomputerscience.org/
Ada Computer Science: https://adacomputerscience.org/
Royal Society of Chemistry: https://edu.rsc.org/student
Freesciencelessons (GCSE & A Level Sciences)
Mr Bulmer's Learning Zone (IGCSE & A Level Computer Science)
Cognito (For Sciences):
Mario's Math Tutoring
IGCSE Online (For multiple subjects):
IGCSE Computer Science
Science Shorts:
Alt Academy (For multiple O & A Level Subjects:
MrBrownCS
James Gan (For CS & Physics):
Slate Pakistan (For O & A level subjects):
GCE Guide: https://papers.gceguide.cc/
PapaCambridge: https://pastpapers.papacambridge.com/
Rove Papers:
Flocus - A great timer: flocus.com
CIE Website: cie.org.uk/alevel or cie.org.uk/olevel or cie.org.uk/igcse
(Pro tip, you can type cie.org.uk/(your subject code) and it will redirect you to the subject's page on the CIE Website. So for example cie.org.uk/2210 would take you to the O Level Computer Science Page)