I can tutor biology, math, physics, and chemistry definitely. Also can help with English possibly, but no promises. (Also I'm American so forgive me for my ignorance, we do our exams in a very, very different system.)

I don't have Skype, but if anyone wants help just shoot me a PM and we'll work something out. Or just add me on Google Hangouts (email is on my profile) and we'll make that work.