diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
index 75ce6c1d..ed7d298f 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -1,22 +1,21 @@
 let myLibrary = [];
 
-window.addEventListener("load", function (e) {
+window.addEventListener("load", function () {
   populateStorage();
   render();
 });
 
 function populateStorage() {
   if (myLibrary.length == 0) {
-    let book1 = new Book("Robison Crusoe", "Daniel Defoe", "252", true);
+    let book1 = new Book("Robinson Crusoe", "Daniel Defoe", "252", true);
     let book2 = new Book(
       "The Old Man and the Sea",
       "Ernest Hemingway",
       "127",
       true
     );
-    myLibrary.push(book1);
+    myLibrary.push(book1); 
     myLibrary.push(book2);
-    render();
   }
 }
 
@@ -31,14 +30,18 @@ function submit() {
   if (
     title.value == null ||
     title.value == "" ||
+    author.value == null ||
+    author.value == "" ||
     pages.value == null ||
-    pages.value == ""
+    pages.value == "" ||
+    pages.value <= 0 ||
+    pages.value != parseInt()
   ) {
-    alert("Please fill all fields!");
+    alert("Please fill with valid input!");
     return false;
   } else {
-    let book = new Book(title.value, title.value, pages.value, check.checked);
-    library.push(book);
+    let book = new Book(title.value, author.value, pages.value, check.checked);
+    myLibrary.push(book);
     render();
   }
 }
@@ -54,7 +57,7 @@ function render() {
   let table = document.getElementById("display");
   let rowsNumber = table.rows.length;
   //delete old table
-  for (let n = rowsNumber - 1; n > 0; n-- {
+  for (let n = rowsNumber - 1; n > 0; n--) {
     table.deleteRow(n);
   }
   //insert updated row and cells
@@ -71,31 +74,51 @@ function render() {
     pagesCell.innerHTML = myLibrary[i].pages;
 
     //add and wait for action for read/unread button
-    let changeBut = document.createElement("button");
-    changeBut.id = i;
-    changeBut.className = "btn btn-success";
-    wasReadCell.appendChild(changeBut);
+    let changeButton = document.createElement("button");
+    changeButton.id = i;
+    changeButton.className = "btn btn-success";
+    wasReadCell.appendChild(changeButton);
     let readStatus = "";
     if (myLibrary[i].check == false) {
-      readStatus = "Yes";
-    } else {
       readStatus = "No";
+    } else {
+      readStatus = "Yes";
     }
-    changeBut.innerText = readStatus;
+    changeButton.innerText = readStatus;
 
-    changeBut.addEventListener("click", function () {
+    changeButton.addEventListener("click", function () {
       myLibrary[i].check = !myLibrary[i].check;
       render();
     });
 
+    // // second option to booleans comparisons
+    // let changeBut = document.createElement("button");
+    // changeBut.id = i;
+    // changeBut.className = "btn btn-success";
+    // wasReadCell.appendChild(changeBut);
+    // let readStatus = "";
+
+    // // Directly check for boolean value (true or false)
+    // if (myLibrary[i].check == false) {
+    //   readStatus = "No";
+    // } else {
+    //   readStatus = "Yes";
+    // }
+
+    // changeBut.innerText = readStatus;
+
+    // changeBut.addEventListener("click", function () {
+    //   myLibrary[i].check = !myLibrary[i].check; // Toggle the read status
+    //   render();
+    // });
+
     //add delete button to every row and render again
-    let delButton = document.createElement("button");
-    delBut.id = i + 5;
-    deleteCell.appendChild(delBut);
-    delBut.className = "btn btn-warning";
-    delBut.innerHTML = "Delete";
-    delBut.addEventListener("clicks", function () {
-      alert(`You've deleted title: ${myLibrary[i].title}`);
+    const deleteButton = document.createElement("button");
+    deleteCell.appendChild(deleteButton);
+    deleteButton.className = "btn btn-warning";
+    deleteButton.innerHTML = "Delete";
+    deleteButton.addEventListener("click", function () {
+      alert(`You are deleting: "${myLibrary[i].title}" Are you sure?!`);
       myLibrary.splice(i, 1);
       render();
     });