If you are starting revision, review the relevant guide pages under each subject tab first. Work through the included examples on paper, then download or solve the matching worksheet questions. Marking your answers honestly against the solutions is the absolute fastest way to discover and target your exact gaps.
If you're looking for personalized one-to-one tutoring, the resources above are free for anyone to use — but if you want dedicated support to target your syllabus gaps, send a WhatsApp to +44 7760 257814. The first session is free.