How to do maths for April attempt. Struggling a lot

I'm not aiming for advanced. Doing conic sections. Barely able to do questions. Step by step process to do maths? I'll try to do the following chapters before April attempt: 1. Conic sections 2. Sequence and series 3. PnC(at least basic questions) 4. Probably 5. Area under curve 6. Complex numbers 7. Differential equations I've completed: matrice and determinats. Vectors and 3D geometry