Liberalism, Anarchism and socialism is what im doing due to them linking together so well, ive never really liked the conservative 45 markers, but i will attempt to do the 15 markers if they are easy. You have a fair bit of time to learn the ideologies, learning one completely will literally take you a few hours, just for the next 2-3 weeks just dedicate your life to your exams, it will be over before you know it.