diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 0000000..13566b8
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,8 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml
diff --git a/.idea/appuntiweb-omega.iml b/.idea/appuntiweb-omega.iml
new file mode 100644
index 0000000..d6ebd48
--- /dev/null
+++ b/.idea/appuntiweb-omega.iml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/.idea/inspectionProfiles/Project_Default.xml b/.idea/inspectionProfiles/Project_Default.xml
new file mode 100644
index 0000000..146ab09
--- /dev/null
+++ b/.idea/inspectionProfiles/Project_Default.xml
@@ -0,0 +1,10 @@
+<component name="InspectionProjectProfileManager">
+  <profile version="1.0">
+    <option name="myName" value="Project Default" />
+    <inspection_tool class="SpellCheckingInspection" enabled="false" level="TYPO" enabled_by_default="false">
+      <option name="processCode" value="true" />
+      <option name="processLiterals" value="true" />
+      <option name="processComments" value="true" />
+    </inspection_tool>
+  </profile>
+</component>
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
new file mode 100644
index 0000000..639900d
--- /dev/null
+++ b/.idea/misc.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 0000000..7ae2dad
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/appuntiweb-omega.iml" filepath="$PROJECT_DIR$/.idea/appuntiweb-omega.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..35eb1dd
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/pages/index.tsx b/pages/index.tsx
index ed16546..03f7829 100644
--- a/pages/index.tsx
+++ b/pages/index.tsx
@@ -170,9 +170,11 @@ const Home: NextPage = () => {
                 <Heading level={3}>
                     Anno 4
                 </Heading>
-                <ListUnordered disabled={true}>
+                <ListUnordered>
                     <ListUnordered.Item>
-                        TBD
+                        <Link href="/year4/bigdata">
+                            Big data analytics
+                        </Link>
                     </ListUnordered.Item>
                 </ListUnordered>
             </Box>
diff --git a/pages/year4/bigdata/index.tsx b/pages/year4/bigdata/index.tsx
new file mode 100644
index 0000000..b8ea62c
--- /dev/null
+++ b/pages/year4/bigdata/index.tsx
@@ -0,0 +1,65 @@
+import {Heading, Chapter, Box, Idiomatic as I, Panel, ListUnordered, Parenthesis} from "@steffo/bluelib-react"
+import type { NextPage, NextPageContext } from 'next'
+import { Link } from '../../../components/link'
+import { Warn1024 } from '../../../components/warn'
+
+
+export async function getStaticProps(_context: NextPageContext) {
+    return {
+        props: {}
+    }
+}
+
+
+const Page: NextPage = () => {
+    return <>
+        <Heading level={2}>
+            Big data analytics
+        </Heading>
+        <Chapter>
+            <Box todo>
+                <Heading level={3}>
+                    Premessa
+                </Heading>
+                <p>
+                    TODO
+                </p>
+            </Box>
+        </Chapter>
+        <Chapter>
+            <Box todo>
+                <Heading level={3}>
+                    Materiale raccolto
+                </Heading>
+                <p>
+                    TODO
+                </p>
+                <Chapter>
+                    <Panel>
+                        <Heading level={4}>
+                            Appuntiweb
+                        </Heading>
+                        <Warn1024/>
+                        <ListUnordered>
+                            <ListUnordered.Item>
+                                <Link href="/year4/bigdata/teoria">Appunti di teoria</Link>
+                            </ListUnordered.Item>
+                        </ListUnordered>
+                    </Panel>
+                </Chapter>
+            </Box>
+        </Chapter>
+        <Chapter>
+            <Box>
+                <Heading level={3}>
+                    Cose bizzarre
+                </Heading>
+                <Parenthesis>
+                    La prof. Mandreoli consiglia il film <Link href={"https://en.wikipedia.org/wiki/Moneyball_(film)"}>Moneyball</Link>, (perchè fa vedere quanto sia utile la data science).
+                </Parenthesis>
+            </Box>
+        </Chapter>
+    </>
+}
+
+export default Page
diff --git a/pages/year4/bigdata/teoria.tsx b/pages/year4/bigdata/teoria.tsx
new file mode 100644
index 0000000..45f9919
--- /dev/null
+++ b/pages/year4/bigdata/teoria.tsx
@@ -0,0 +1,87 @@
+import {Heading, Chapter, Box, ListUnordered, ListOrdered, Parenthesis, Idiomatic as I, BringAttention as B} from "@steffo/bluelib-react"
+import type { NextPage, NextPageContext } from 'next'
+import { Link } from '../../../components/link'
+
+
+export async function getStaticProps(_context: NextPageContext) {
+    return {
+        props: {}
+    }
+}
+
+
+const Page: NextPage = () => {
+    return <>
+        <Heading level={2}>
+            <Link href="/year4/bigdata">
+                Big data analytics
+            </Link>
+        </Heading>
+        <Chapter>
+            <Heading level={3}>
+                Fasi di elaborazione dei dati
+            </Heading>
+            <Box>
+                <Heading level={3}>
+                    Raccolta dati
+                </Heading>
+                <p>
+                    I dati vengono massivamente <I>raccolti</I> da tutte le fonti disponibili.
+                </p>
+                <Parenthesis>
+                    Ad esempio, possono essere raccolti da:
+                    <ListUnordered>
+                        <ListUnordered.Item>Download diretto</ListUnordered.Item>
+                        <ListUnordered.Item>Generazione via simulazione</ListUnordered.Item>
+                        <ListUnordered.Item>Database pubblici</ListUnordered.Item>
+                        <ListUnordered.Item>Richieste ad un'API</ListUnordered.Item>
+                        <ListUnordered.Item>Scraping di pagine web dinamiche</ListUnordered.Item>
+                    </ListUnordered>
+                </Parenthesis>
+            </Box>
+            <Box>
+                <Heading level={3}>
+                    Elaborazione dati
+                </Heading>
+                <p>
+                    I dati raccolti vengono <I>elaborati</I> e puliti, trasformandoli in formati su cui sia possibile effettuare analisi.
+                </p>
+                <Parenthesis>
+                    Ad esempio, se i dati provengono da basi di dati diverse, vengono resi uniformi e normalizzati.
+                </Parenthesis>
+            </Box>
+            <Box>
+                <Heading level={3}>
+                    Analisi esploratoria
+                </Heading>
+                <p>
+                    Vengono <I>analizzati</I> i dati in generale per farsi un'idea di come costruire i modelli successivamente.
+                </p>
+                <p>
+                    Per aiutarsi nell'analisi, possono essere realizzate <B>visualizzazioni</B>, come grafici o mappe, che possono rappresentare alcune proprietà dei dati.
+                </p>
+                <Parenthesis>
+                    Questa è la fase in cui <Link href={"https://matplotlib.org/"}>Matplotlib</Link> diventa utile!
+                </Parenthesis>
+            </Box>
+            <Box todo>
+                <Heading level={3}>
+                    Sviluppo modelli
+                </Heading>
+                <p>
+                    la prof ha lasciato a metà il discorso
+                </p>
+            </Box>
+            <Box todo>
+                <Heading level={3}>
+                    Verifica ipotesi
+                </Heading>
+                <p>
+                    le slide non continuano oltre
+                </p>
+            </Box>
+        </Chapter>
+    </>
+}
+
+export default Page