i'm a student from ap hyderabad .halliday is definitely a very good book.
but it doesnt give u a good work for problems.h.c verma can fill that gap.
coming to th ebook for problems book.keep tmh for maths,h.c verma for physics and bahadur and arihant objective for chemistry.
time management cant be told bu t one thing is u must have an effective study atleast for 3 hrs