In vmc modules theory and questions are of which level jee mains or advance
It depends on your course taken from vmc.It includes both theory and questions of jee mains as welll as jee advanced.You can prepare from it as it is good for preparation.But you should first complete your ncert to get your basic concepts clear and solve it's questions. You can try to solve books like hc verma,op tondon,RC Mukherjee,RD Sharma,Arihant to enhance your skills.
Good luck.

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