diff --git a/src/books.js b/src/books.js
index c8119bb..5bf87b5 100644
--- a/src/books.js
+++ b/src/books.js
@@ -38,28 +38,72 @@
 
 
 // Your code here:
-const booksArray = [];
-
+const booksArray = [
+  {
+    Book: 1,
+    title: "The Old Man and the Sea",
+    pages: 128,
+    author: "Ernest Hemingway",
+    details: {
+      language: "English",
+      description: "One of Hemingway's most famous works, it tells the story of Santiago..."
+    }
+  },
+  {
+    Book: 2,
+    title: "The Airbnb Story",
+    pages: 256,
+    author: "Leight Gallagher",
+    details: {
+      language: "English",
+      description: "This is the remarkable behind-the-scenes story of the creation and growth of Airbnb..." 
+    }
+   },
+  {
+    Book: 3,
+    title: "Educated - A Memoir",
+    pages: 352,
+    author: "Tara Westover",
+    details: {
+      language: "English",
+      description: "Educated is an account of the struggle for self-invention..."
+    }
+   },
+  {
+    Book: 4,
+    title: "The Art of Learning",
+    pages: 288,
+    author: "Josh Waitzkin",
+    details: {
+    language: "English",
+    description: "The Art of Learning takes readers through Waitzkin's unique journey to excellence. He explains in clear detail how a well-thought-out, principled approach to learning is what separates success from failure."
+    }
+  }
+];
 
 
 
 // Iteration 2 | Book Details
-function getBookDetails() {
+function getBookDetails(book) {
   // Your code here:
-
+   return `${book.title} - ${book.author} - ${book.pages} pages`;
 }
 
 
 
 // Iteration 3 | Delete Language
 // Your code here:
-
+for (let i = 0; i < booksArray.length; i++) {
+  delete booksArray[i].details.language;
+}
 
 
 
 // Iteration 4 | Estimated Reading Time
 // Your code here:
-
+booksArray.forEach((book) => {
+  book.readingTime = Math.ceil((book.pages * 500) /90)
+});
 
 
 
@@ -86,15 +130,30 @@ const dictionary = {
     ],
 };
 
-function booksByAuthor() {
+function booksByAuthor(dictionary) {
   // Your code here:
-  
+ const information = [];
+
+  for (const author in dictionary) {
+    dictionary[author].forEach(book => {
+      information.push({
+        title: book[0],
+        pages: book[1],
+        author: author
+      });
+    });
+  }
+
+  return information;
 }
 
 
-
 // Bonus: Iteration 6 | Average Page Count
-function averagePageCount() {
-  // Your code here:
-  
+function averagePageCount(booksNumbers) {
+  // Your code here:s
+let sum = 0;
+booksNumbers.forEach((books) => {
+  sum += books.pages;
+});
+return sum / booksNumbers.length;
 }