hello sir
Yeah I will give you the solution that please follow the prescribed text books first then refer the reference books for the chemistry first of all don't create any fear in your mind about the chemistry and study the lot of reactions which are important topics
If any topic is difficult for you please see the videos related to the concepts of chemistry
and please watch the NPTL videos in that they will teach the concepts very easily
after these activities please refer the previous question papers of 12th class CBSC
Regards