diff --git a/data-and-functions-1/src/functions/getActiveUsers.js b/data-and-functions-1/src/functions/getActiveUsers.js
new file mode 100644
index 0000000..8739e89
--- /dev/null
+++ b/data-and-functions-1/src/functions/getActiveUsers.js
@@ -0,0 +1,16 @@
+const getActiveUsers = (data) => {
+  if (data == null || data.users == null) {
+    return null
+  } else {
+    const activeUsers = []
+    for (let i = 0; i < data.users.length; i++) {
+      const currentUser = data.users[i]
+      if (currentUser.accountActive === true) {
+        activeUsers.push(currentUser)
+      }
+    }
+    return activeUsers
+  }
+}
+
+export default getActiveUsers
diff --git a/data-and-functions-1/src/functions/getMostExpensiveProduct.js b/data-and-functions-1/src/functions/getMostExpensiveProduct.js
new file mode 100644
index 0000000..fcf49dc
--- /dev/null
+++ b/data-and-functions-1/src/functions/getMostExpensiveProduct.js
@@ -0,0 +1,16 @@
+const getMostExpensiveProduct = (data) => {
+  if (data == null || data.products == null) {
+    return null
+  }
+
+  let mostExpensive = data.products[0]
+  for (let i = 1; i < data.products.length; i++) {
+    const currentProduct = data.products[i]
+    if (mostExpensive.price < currentProduct.price) {
+      mostExpensive = currentProduct
+    }
+  }
+  return mostExpensive
+}
+
+export default getMostExpensiveProduct
diff --git a/data-and-functions-1/src/functions/getOrderInfo.js b/data-and-functions-1/src/functions/getOrderInfo.js
new file mode 100644
index 0000000..07af716
--- /dev/null
+++ b/data-and-functions-1/src/functions/getOrderInfo.js
@@ -0,0 +1,26 @@
+import getProductById from './getProductById'
+import getUserById from './getUserById'
+
+const getOrderInfo = (DATA) => {
+  if (DATA == null || DATA.orders == null) {
+    return null
+  }
+  const orderInfoArr = []
+
+  for (let i = 0; i < DATA.orders.length; i++) {
+    const currentOrder = DATA.orders[i]
+
+    const orderId = currentOrder.id
+    const userName = getUserById(DATA, currentOrder.userId).name
+    const price = getProductById(DATA, currentOrder.productId).price
+    const orderInfo = {
+      orderId: orderId,
+      userName: userName,
+      price: price
+    }
+    orderInfoArr.push(orderInfo)
+  }
+  return orderInfoArr
+}
+
+export default getOrderInfo
diff --git a/data-and-functions-1/src/functions/getProductById.js b/data-and-functions-1/src/functions/getProductById.js
new file mode 100644
index 0000000..2fe54bf
--- /dev/null
+++ b/data-and-functions-1/src/functions/getProductById.js
@@ -0,0 +1,11 @@
+const getProductById = (data, id) => {
+  if (data == null || data.products == null || id == null) {
+    return null
+  }else{
+    return data.products.find((p) => {
+      return p.id === id
+    })
+  }
+}
+
+export default getProductById
diff --git a/data-and-functions-1/src/functions/getUserById.js b/data-and-functions-1/src/functions/getUserById.js
new file mode 100644
index 0000000..840112a
--- /dev/null
+++ b/data-and-functions-1/src/functions/getUserById.js
@@ -0,0 +1,9 @@
+const getUserById = (data, id) => {
+  if (data == null || id == null || data.users == null) {
+    return null
+  }else{
+    return data.users.find((u) => u.id === id)
+  }
+}
+
+export default getUserById
diff --git a/data-and-functions-2/src/functions/getProductsForOrder.js b/data-and-functions-2/src/functions/getProductsForOrder.js
new file mode 100644
index 0000000..e69de29