I am currently self-studying AS Maths (Edexcel) and curious to compare where I am now with you guys - not sure if I'm ahead, just right, or behind. Currently I have started the 'Differentiation' topic in C1.
We have almost finished C1 (will finish before half term and have a mock when we come back) and then we will start C2 and S1 together (one section with each of our teachers)