Hello aspirant!
B.Tech CSE 1st Year Subjects:

Computer Science Essentials

Computational Thinking and Problem Solving

Cultural Education I

Cultural Education II

Computer Programming

Computer programming lab

Communicative English

Calculus and Matrix Algebra

Engg.Drawing- CAD

Vector Calculus and Ordinary Differential Equations

Fundamentals of Electrical and Electronics Engineering

Physics/Chemistry

Physics/Chemistry Lab

Chemistry/Physics

Chemistry Lab. / Physics Lab.

Workshop A/Workshop B

Workshop B / Workshop A

I would suggest the following :

John zelles Python programming.

Intro to cs book

John guttags book

Intro to computation and programming using python

Rogens book Discrete mathematics

Think python

For further learning :

Algorithms unlocked

Intro to algorithms CLRS

Hope this helps you!
Regards!