C3/C4- Solomons papers or hegarty maths?Watch
Basically what he's done is put all the questions from the solomons papers that he believes are best for fully understanding the topic- you attempt them and then watch the video to see if you're stuck.
^e.g. for algebraic questions
do you think this is better (tackling each section individually doing all the questions) than going through each solomons paper on its own?