How to study organic chemistry effectively within a week?

dear gokul 
if u want to do organic in detail , then its not possible to do it in 1 week . 
frst of all u need to start with GOC , from ncert , and in case you have class notes , then refer to that , that chapter will take 10-12 days alone , 
after that go with haloalkane and haloareanes , and then hydrocarbon , and once your 3 chap done properly , then u can do rest of the chap in 2-3 days per chap . 
but be clear with besics like nomenclature and reaction intermediate , that two thing u need to care about . 
all the best 
regards