Here is a list of resource you can use

 

Websites:

 

Introduction to C Programming from https://www.le.ac.uk/users/rjm1/cotter/page_11.htm

 

Introduction to C from https://www.cprogramming.com/tutorial/c/lesson1.html

 

C Tutorial from https://www.tutorialspoint.com/cprogramming/index.htm

 

Introduction to Programming from https://en.wikiversity.org/wiki/Introduction_to_Programming/Organization_part_1

 

C Language Introduction from https://www.geeksforgeeks.org/c-language-set-1-introduction/

 

C Programming from https://en.wikibooks.org/wiki/C_Programming

 

Learn C Programming from https://www.programiz.com/c-programming

 

C Programming Tutorial from https://www.ntu.edu.sg/home/ehchua/programming/cpp/c0_Introduction.html

 

Books:

 

An Introduction to the C Programming Language and Software Design by Tim Bailey

http://www-personal.acfr.usyd.edu.au/tbailey/ctext/ctext.pdf  ( Copyright owned by Time Bailey)