Losing struct values after assigning 'next' and 'prev' struct pointers - c

Question

I am creating a Book Management system in which the user can search by the title or the author of the book. The problem I am running into is when I try to get the values from the books. When searching for the author, all I get are symbols and an infinite for loop, instead of any of the authors that are already saved in config.
I am more than certain that it is something wrong with the way I am storing these values, but am not sure.
main.c:
#include <stdlib.h>
#include <stdio.h>
int main(int argc, char * argv[]) {
struct Books books;
// Config works fine and dandy, don't need to worry about this
cfg = read_config(cfg, "test-cfg.cfg");
for (int size = 0; size < cfg.valuesSize; size++) {
// Gets values from the config and assigns the values to the struct Books
books.id = atoi(cfg.values[size][0][1]);
strcpy(books.name, cfg.values[size][1][1]);
strcpy(books.author, cfg.values[size][2][1]);
strcpy(books.description, cfg.values[size][3][1]);
// Assign prev and next in Books struct
struct Books nextBook;
books.next = &nextBook;
nextBook.prev = &books;
books = *books.next;
}
// This throws Frontend screens at the user
// While also pipelining to backend functions
while(true) {
int welcome = 1;
switch (welcome) {
case 1: {
struct Books booksFound[cfg.valuesSize];
int booksFoundPtr = 0;
int searchOption = 2;
getchar();
if (searchOption==2) {
printf("Enter the Author: ");
char bookAuthor[AUTHOR_MAX];
fgets(bookAuthor, AUTHOR_MAX, stdin);
// Here is where the code screws up.
// It gives me random symbols instead of the book author's name
for (; books.id >= 1; books = *books.prev) {
if (strncmp(books.author, bookAuthor, strlen(books.author))==0) {
booksFound[booksFoundPtr] = books;
booksFoundPtr++;
}
}
}
// Used for showing all matching book authors
for (int i = 0; i < booksFoundPtr; i++) {
printf("ID:%d\nTITLE:%s\nAUTHOR:%s\nDESCRIPTION:%s\n", booksFound[i].id, booksFound[i].name, booksFound[i].author, booksFound[i].description);
char option[2] = {'\0'};
fgets(option, 2, stdin);
switch(atoi(option)) {
case 1: {
if (i+1 == booksFoundPtr) {
i--;
}
break;
}
case 2: {
if (i-1 < 0) {
i--;
break;
}
else {
i-=2;
}
break;
}
default: {
break;
}
}
}
// Rewinds books for next use
while(books.id != cfg.valuesSize) {
books = *books.next;
}
continue;
}
default: {
continue;
}
}
break;
}
return 0;
}
books.h
#define NAME_MAX 60
#define AUTHOR_MAX 100
#define DESCRIPTION_MAX 240
struct Books {
int id;
char name[NAME_MAX];
char author[AUTHOR_MAX];
char description[DESCRIPTION_MAX];
struct Books * next;
struct Books * prev;
};