diff --git a/lab-js-book-objects/lab-javascript-book-objects b/lab-js-book-objects/lab-javascript-book-objects
new file mode 160000
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+++ b/lab-js-book-objects/lab-javascript-book-objects
@@ -0,0 +1 @@
+Subproject commit d9e31302e2d8d05cd014450ff2470eb98aa8f432
diff --git a/lab-js-challenge-1/lab-js-challenges-1 b/lab-js-challenge-1/lab-js-challenges-1
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+Subproject commit db5714de226d210ed689d49697cec1d96d32f0fc
diff --git a/lab-js-unit-testing-jasmine/lab-unit-testing-jasmine b/lab-js-unit-testing-jasmine/lab-unit-testing-jasmine
new file mode 160000
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+Subproject commit 6fde7ef1ac2a2b003a8efb2aeaf4a34482f1b5e5
diff --git a/src/books.js b/src/books.js
index c8119bb..c4a47bf 100644
--- a/src/books.js
+++ b/src/books.js
@@ -38,28 +38,74 @@
 
 
 // Your code here:
-const booksArray = [];
-
+const booksArray = [
+  {
+ 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...",
+ }
+  },
+{
+ 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..."
+ }
+},
+{
+ title: "Educated - A Memoir",
+ pages: 352,
+  author: "Tara Westover",
+ details: 
+ {
+    language: "English",
+  description:"Educated is an account of the struggle for self-invention...",
+ }
+},
+{
+ 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:
-
+delete booksArray.length.language
+console.log(booksArray)
 
 
 
 // Iteration 4 | Estimated Reading Time
 // Your code here:
+booksArray[0].readingTime = Math.ceil((booksArray[0].pages * 500 / 90));
+booksArray[1].readingTime = Math.ceil((booksArray[1].pages * 500 / 90));
+booksArray[2].readingTime = Math.ceil((booksArray[2].pages * 500 / 90));
+booksArray[3].readingTime = Math.ceil((booksArray[3].pages * 500 / 90));
 
+console.log(`${booksArray.readingTime} min`);