diff --git a/README.md b/README.md
index 07fd982..c4aa258 100644
--- a/README.md
+++ b/README.md
@@ -1,11 +1,5 @@
-<h2>Material referente as entregas dos desafios no curso de Back-End na Coderhouse Brasil</h2>
-
+<h1>Descrição:</h1>
 <hr>
-
-<h3> Aulas com entrega:</h3>
-<ul>
-<li>Aula 2 ( Classes com ECMAScript e ECMAScript avançado )</li>
-
-</ul>
-
-<span>Acesse as aulas pelas branches</span>
\ No newline at end of file
+<div>
+<p>12/12/2024 Desafio ( Gestão de Arquivos em Javascript ) da Aula 4 ( Introdução ao Node.js ) do curso de Back-end na CoderHouse; Turma #63515 de 2024/25.</p>
+</div>
\ No newline at end of file
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..7aeafda
--- /dev/null
+++ b/package.json
@@ -0,0 +1,11 @@
+{
+  "name": "cursocoderhousebackend",
+  "version": "1.0.0",
+  "description": "aula 4 de back end",
+  "main": "productManager.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "Gustavo Rezende",
+  "license": "ISC"
+}
diff --git a/src/assets/productManager.js b/src/assets/productManager.js
new file mode 100644
index 0000000..d27dbe4
--- /dev/null
+++ b/src/assets/productManager.js
@@ -0,0 +1,75 @@
+const fs = require('fs');
+
+class ProductManager {
+    constructor(path) {
+        this.path = path;
+    }
+
+    async addProduct(product) {
+        let products = await this.getProducts();
+        const newProduct = {
+            id: products.length > 0 ? products[products.length - 1].id + 1 : 1,
+            ...product
+        };
+        products.push(newProduct);
+        await fs.promises.writeFile(this.path, JSON.stringify(products, null, 2));
+        return newProduct;
+    }
+
+    async getProducts() {
+        try {
+            const data = await fs.promises.readFile(this.path, 'utf-8');
+            return JSON.parse(data);
+        } catch (error) {
+            return [];
+        }
+    }
+
+    async getProductById(id) {
+        const products = await this.getProducts();
+        return products.find(product => product.id === id) || null;
+    }
+
+    async updateProduct(id, updatedFields) {
+        let products = await this.getProducts();
+        let productIndex = products.findIndex(product => product.id === id);
+
+        if (productIndex === -1) {
+            return null;
+        }
+
+        products[productIndex] = { ...products[productIndex], ...updatedFields, id };
+        await fs.promises.writeFile(this.path, JSON.stringify(products, null, 2));
+        return products[productIndex];
+    }
+
+    async deleteProduct(id) {
+        let products = await this.getProducts();
+        const filteredProducts = products.filter(product => product.id !== id);
+
+        if (products.length === filteredProducts.length) {
+            return false;
+        }
+
+        await fs.promises.writeFile(this.path, JSON.stringify(filteredProducts, null, 2));
+        return true;
+    }
+}
+
+//! Execution
+(async () => {
+    const manager = new ProductManager('products.json');
+
+    await manager.addProduct({
+        title: 'Produto Exemplo',
+        description: 'Descrição do produto',
+        price: 100,
+        thumbnail: 'imagem.jpg',
+        code: 'ABC123',
+        stock: 10
+    });
+
+    console.log(await manager.getProducts());
+})();
+
+
diff --git a/src/index.js b/src/index.js
new file mode 100644
index 0000000..03576ed
--- /dev/null
+++ b/src/index.js
@@ -0,0 +1 @@
+// 404
\ No newline at end of file