diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
index 75ce6c1..d424574 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -1,30 +1,25 @@
 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 book2 = new Book(
-      "The Old Man and the Sea",
-      "Ernest Hemingway",
-      "127",
-      true
-    );
-    myLibrary.push(book1);
-    myLibrary.push(book2);
-    render();
-  }
+  let book1 = new Book("Robison Crusoe", "Daniel Defoe", "252", true);
+  let book2 = new Book(
+    "The Old Man and the Sea",
+    "Ernest Hemingway",
+    "127",
+    true
+  );
+  myLibrary.push(book1, book2);
+  render();
 }
 
 const title = document.getElementById("title");
 const author = document.getElementById("author");
 const pages = document.getElementById("pages");
 const check = document.getElementById("check");
-
 //check the right input from forms and if its ok -> add the new book (object in array)
 //via Book function and start render function
 function submit() {
@@ -37,8 +32,8 @@ function submit() {
     alert("Please fill all fields!");
     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();
   }
 }
@@ -53,35 +48,33 @@ function Book(title, author, pages, check) {
 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
-  let length = myLibrary.length;
-  for (let i = 0; i < length; i++) {
+  for (let i = 0; i < myLibrary.length; i++) {
     let row = table.insertRow(1);
-    let titleCell = row.insertCell(0);
-    let authorCell = row.insertCell(1);
-    let pagesCell = row.insertCell(2);
-    let wasReadCell = row.insertCell(3);
-    let deleteCell = row.insertCell(4);
-    titleCell.innerHTML = myLibrary[i].title;
-    authorCell.innerHTML = myLibrary[i].author;
-    pagesCell.innerHTML = myLibrary[i].pages;
+    let cell1 = row.insertCell(0);
+    let cell2 = row.insertCell(1);
+    let cell3 = row.insertCell(2);
+    let cell4 = row.insertCell(3);
+    let cell5 = row.insertCell(4);
+
+    cell1.innerHTML = myLibrary[i].title;
+    cell2.innerHTML = myLibrary[i].author;
+    cell3.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 readStatus = "";
-    if (myLibrary[i].check == false) {
-      readStatus = "Yes";
-    } else {
-      readStatus = "No";
-    }
-    changeBut.innerText = readStatus;
+    cell4.appendChild(changeBut);
+
+    let readStatus = myLibrary[i].check ? "Yes" : "No";
+    changeBut.innerHTML = readStatus;
 
     changeBut.addEventListener("click", function () {
       myLibrary[i].check = !myLibrary[i].check;
@@ -90,11 +83,12 @@ function 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 () {
+    delButton.id = i + 5;
+    cell5.appendChild(delButton);
+    delButton.className = "btn btn-warning";
+    delButton.innerHTML = "Delete";
+
+    delButton.addEventListener("click", function () {
       alert(`You've deleted title: ${myLibrary[i].title}`);
       myLibrary.splice(i, 1);
       render();