Archives

I maintain problem archives for High School Olympiads:
Physics / [readme] / [errata]
Astronomy / [readme] / [errata]

Handouts

Thermodynamics:  Vapours
EM:  Magnetic charges
Optics:  Russian problems / CCD cameras

Bulgarian IPhO team selection tests 🆕

Physics resources (in Bulgarian)
Astronomy resources (in Bulgarian)

Advice

Studying for Olympiads
Exam Technique

Tutoring

This year I'm doing some tutoring for Physics Olympiads.
For more details, see here.