hello 

Balaji m g

The main important thing u should keep in ur mind is the competation is increasing year by year 

so please follow what i am telling daily u study some topics first in which subject your interested then go for other subjects and also be logically thinking and play the brain games and  one thing is that information study for ur sake not for other sake 

please study the NCRT text book very well ok then u go for other competative book 

i think the provided inforamtion is helpfull   thank u