Hi aspirant,
You have not mentioned which course do you want to pursue IT in, You can pursue Information Technology in Undergraduation with BE, B. TECH, BA, BCA & in Postgraduation with ME, M. TECH, MA, MCA.
I've listed the subjects you will read generally in all the IT courses :-
Computer Architecture and Organization

Database Systems

Operating Systems

Electronics

Computer Networks

Foundations of Computer Systems

Java Programming and Website Design

Design and Analysis of Algorithms

Software Engineering

Database Management Systems

E-Commerce & ERP

Multimedia Applications

Object Oriented Programming

Data Structures

Data Warehousing and Data Mining

Engineering Mathematics

Thank you.