diff --git a/basics/language/README.md b/basics/language/README.md
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+++ b/basics/language/README.md
@@ -0,0 +1,15 @@
+# Fibonacci example
+
+This example shows how to calculate a specific number in the fibonacci sequence using recursion.
+
+## Running the example
+
+To run the example on your ESP32, execute the following command:
+
+```bash
+toit run fibonacci.toit
+```
+
+## License
+
+[BSD0](https://choosealicense.com/licenses/0bsd/)
diff --git a/basics/language/fibonacci.toit b/basics/language/fibonacci.toit
new file mode 100644
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+++ b/basics/language/fibonacci.toit
@@ -0,0 +1,16 @@
+/**
+This example defines a top-level function called fib that is not a member of any class.
+It prints the 10th number in the fibonacci sequence. 
+
+The fib function is recursive, calling itself, and also makes use of a few new features. 
+The if-statement is well known from other languages. In Toit it works by taking an expression 
+and conditionally evaluating a block. Like other blocks we could have used indentation to group 
+multiple lines.
+*/
+
+fib n:
+  if n <= 1: return n
+  return (fib n-1) + (fib n-2)
+
+main:
+  print "The 10th Fibonacci number is $(fib 10)"
diff --git a/net/README.md b/net/README.md
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+++ b/net/README.md
@@ -0,0 +1,15 @@
+# TLS example
+
+This example sends a request to Google.com and prints the size of the response.
+
+## Running the example
+
+To run the example on your ESP32, execute the following command:
+
+```bash
+toit run tls.toit
+```
+
+## License
+
+[BSD0](https://choosealicense.com/licenses/0bsd/)
diff --git a/net/tls.toit b/net/tls.toit
new file mode 100644
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--- /dev/null
+++ b/net/tls.toit
@@ -0,0 +1,75 @@
+/**
+TLS example code.
+
+This example sends a request to Google.com and prints the size of the response.
+*/
+
+import net
+import net.x509 as net
+import http
+import tls
+
+main:
+  // Open the default network interface (typically WiFi).
+  network_interface := net.open
+
+  host := "www.google.com"
+  // Establish a TCP connection with Google.com.
+  tcp := network_interface.tcp_connect host 443
+
+  // Upgrade the TCP socket to a secure TLS socket.
+  socket := tls.Socket.client tcp
+    --server_name=host
+    --root_certificates=[GLOBALSIGN_ROOT]
+
+  // Instantiate an HTTP connection object, on which we can do requests.
+  connection := http.Connection socket host
+  // Create and send the request.
+  request := connection.new_request "GET" "/"
+  // Before sending the request, we could tweak the headers of the request here.
+  response := request.send
+
+  bytes := 0
+  while data := response.read:
+    bytes += data.size
+
+  print "Read $bytes bytes from https://$host/"
+
+// To find trusted roots like this:
+// $ openssl s_client -showcerts -verify 5  -connect example.com:443 | grep i:
+// The last line with i: shows the name of the root cert.  You can find the
+// trusted root certificate in Chrome at chrome://settings/certificates (the
+// Authorities tab) and export it to a text file.
+
+GLOBALSIGN_ROOT ::= net.Certificate.parse """\
+-----BEGIN CERTIFICATE-----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+BgNVHRMBAf8EBTADAQH/MB0GA1UdDgQWBBTkrysmcRorSCeFL1JmLO/wiRNxPjAf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+-----END CERTIFICATE-----"""