How i learnt coding

Did you ever wondered how below peice of code in C++ works

#include<stdio.h>

int add(a,b);

void main()
{

int a,b;
a=10;
b=20;
int c=add(a,b);
printf("%d\n", c);
}

add(int a,int b)
{
return a+b;
}

I always wondered ,how people built computers and made them work with only 1 and 0’s…I did a lot of research and below are the books/videos that helped in my journey

1.StackOverflow
2.Charles Petzold Code book
3.Ben Eater Tutorials ..he has a knack for explaining things clearly and is a legend. please support him,if you find,his work usefull ..
5.This tutorial by Peter Jay Salzman,helped me understand memory layout of a program and Stack Frames

Now i am onto studying Pointers and then raid K&R C Programming book,this book is a part of Joel spolsky Recommedations

I will keep updating this page,with any books or tutorials i found usefull