diff --git a/hello-world/1-browser-to-browser/air/getting-started.sayHello.air b/hello-world/1-browser-to-browser/air/getting-started.sayHello.air
new file mode 100644
index 0000000..f785e4a
--- /dev/null
+++ b/hello-world/1-browser-to-browser/air/getting-started.sayHello.air
@@ -0,0 +1,43 @@
+(xor
+ (seq
+  (seq
+   (seq
+    (seq
+     (seq
+      (seq
+       (seq
+        (seq
+         (call %init_peer_id% ("getDataSrv" "-relay-") [] -relay-)
+         (call %init_peer_id% ("getDataSrv" "targetPeerId") [] targetPeerId)
+        )
+        (call %init_peer_id% ("getDataSrv" "targetRelayPeerId") [] targetRelayPeerId)
+       )
+       (call -relay- ("op" "noop") [])
+      )
+      (call targetRelayPeerId ("op" "noop") [])
+     )
+     (xor
+      (call targetPeerId ("HelloPeer" "hello") [%init_peer_id%] res)
+      (seq
+       (seq
+        (seq
+         (call targetRelayPeerId ("op" "noop") [])
+         (call -relay- ("op" "noop") [])
+        )
+        (call %init_peer_id% ("errorHandlingSrv" "error") [%last_error% 1])
+       )
+       (call -relay- ("op" "noop") [])
+      )
+     )
+    )
+    (call targetRelayPeerId ("op" "noop") [])
+   )
+   (call -relay- ("op" "noop") [])
+  )
+  (xor
+   (call %init_peer_id% ("callbackSrv" "response") [res])
+   (call %init_peer_id% ("errorHandlingSrv" "error") [%last_error% 2])
+  )
+ )
+ (call %init_peer_id% ("errorHandlingSrv" "error") [%last_error% 3])
+)
diff --git a/hello-world/2-hosted-services/configs/app_config.json b/hello-world/2-hosted-services/configs/app_config.json
new file mode 100644
index 0000000..9054c4e
--- /dev/null
+++ b/hello-world/2-hosted-services/configs/app_config.json
@@ -0,0 +1,18 @@
+{
+	"services": {
+		"hello_world_compute": {
+			"dependencies": ["hello_world_compute"],
+			"node": "12D3KooWHLxVhUQyAuZe6AHMB29P7wkvTNMn7eDMcsqimJYLKREf"
+		}
+	},
+	"modules": {
+		"hello_world_compute": {
+			"file": "artifacts/hello_world_compute.wasm",
+            "config": {
+				"preopened_files": []
+			}
+		}
+	},
+	"scripts": {},
+	"script_storage": {}
+}
\ No newline at end of file
diff --git a/hello-world/2-hosted-services/configs/app_config_res.json b/hello-world/2-hosted-services/configs/app_config_res.json
new file mode 100644
index 0000000..8ce2f63
--- /dev/null
+++ b/hello-world/2-hosted-services/configs/app_config_res.json
@@ -0,0 +1,26 @@
+{
+    "services": {
+        "hello_world_compute": {
+            "dependencies": [
+                "hello_world_compute"
+            ],
+            "node": "12D3KooWHLxVhUQyAuZe6AHMB29P7wkvTNMn7eDMcsqimJYLKREf",
+            "hashDependencies": [
+                "hash:65267bf45b564992ceec5a5f5c36eb6f17dbbb9f0a452419ffa049d2457eeb89"
+            ],
+            "blueprint_id": "81e837fc93b970155b5c2d44e2a18d79ca88a9917db9797a271a342c0ed6516e",
+            "id": "ba24be5b-9789-48ac-b38a-82c9d3eb0d34"
+        }
+    },
+    "modules": {
+        "hello_world_compute": {
+            "file": "artifacts/hello_world_compute.wasm",
+            "config": {
+                "preopened_files": []
+            },
+            "hash": "65267bf45b564992ceec5a5f5c36eb6f17dbbb9f0a452419ffa049d2457eeb89"
+        }
+    },
+    "scripts": {},
+    "script_storage": {}
+}
\ No newline at end of file
diff --git a/hello-world/2-hosted-services/scripts/build.sh b/hello-world/2-hosted-services/scripts/build.sh
new file mode 100755
index 0000000..116825b
--- /dev/null
+++ b/hello-world/2-hosted-services/scripts/build.sh
@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+set -o errexit -o nounset -o pipefail
+
+# This script builds all subprojects and puts all created Wasm modules in one dir
+cargo update --aggressive
+marine build --release
+
+mkdir -p artifacts
+rm -f artifacts/*.wasm
+cp target/wasm32-wasi/release/hello_peer.wasm artifacts/