diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..253f0b7
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,29 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-go@v5
+        with:
+          go-version: stable
+
+      - name: Install Gno
+        run: |
+          curl --proto '=https' --tlsv1.2 -sSf \
+            https://raw.githubusercontent.com/gnolang/gno/master/misc/install.sh \
+            | sh -s -- --from-source
+          echo "$HOME/.gno/bin" >> "$GITHUB_PATH"
+
+      - name: Test
+        run: gno test .
+
+      - name: Lint
+        run: gno lint .
diff --git a/Makefile b/Makefile
index 7d6bf2b..aa8bc85 100644
--- a/Makefile
+++ b/Makefile
@@ -1,8 +1,12 @@
 .PHONY: install dev test
 
 install:
-	curl -sSL https://raw.githubusercontent.com/gnolang/gno/master/misc/install.sh | bash
-	
+	# --from-source is required: the installer's prebuilt-binary mode looks for
+	# v* release tags, and gnolang/gno only publishes chain/* tags today.
+	curl --proto '=https' --tlsv1.2 -sSf https://raw.githubusercontent.com/gnolang/gno/master/misc/install.sh | sh -s -- --from-source
+	@echo '>> binaries are in $$HOME/.gno/bin — add it to your PATH:'
+	@echo '   export PATH="$$HOME/.gno/bin:$$PATH"'
+
 dev:
 	gnodev .
 
diff --git a/README.md b/README.md
index 03cb75a..7f45f0c 100644
--- a/README.md
+++ b/README.md
@@ -18,13 +18,21 @@ check out the "Next Steps" section below for links to more advanced resources.
 
         make install
 
-This will check if Go is installed and install the required Gno tools.
+This clones `gnolang/gno` and builds `gno`, `gnokey`, `gnodev`, `gnobro` and
+`gnoweb` into `$HOME/.gno/bin`. It needs Go, git and make, and takes a few
+minutes the first time. Add the directory to your `PATH` before continuing:
+
+        export PATH="$HOME/.gno/bin:$PATH"
+
+(The installer also has a faster prebuilt-binary mode, but it currently looks
+for `v*` release tags and `gnolang/gno` only publishes `chain/*` tags, so
+`--from-source` is the path that works today.)
 
 3. Start the development server:
 
         make dev
 
-4. Open your browser and visit https://localhost:8888
+4. Open your browser and visit http://localhost:8888
 
 ## What's Included
 
@@ -33,6 +41,19 @@ This repository contains a simple Gno realm with:
 - A `Set` function to update the realm's state
 - A `Get` function to retrieve the stored message
 
+## Deploying it
+
+`gnodev` runs a throwaway local chain. When you want your realm on a real
+network:
+
+- **A testnet** — start here. Testnets are renamed and replaced every few
+  weeks, so look up the current one and its RPC endpoint in
+  [Gno networks](https://docs.gno.land/resources/gnoland-networks), and get
+  tokens from the [faucet](https://faucet.gno.land).
+- **[Mainnet](https://gno.land)** (`gnoland-1`,
+  `https://rpc.gno.land:443`) has been live since 12 September 2026. Real
+  GNOT, no faucet.
+
 ## Next Steps
 
 Ready to learn more? Check out these resources:
diff --git a/hello.gno b/hello.gno
index a1033b1..30b75cd 100644
--- a/hello.gno
+++ b/hello.gno
@@ -13,7 +13,7 @@ Try it out with gnokey:
 	gnokey add myaccount
 	gnokey list
 
-[And click here](/r/demo/hello$help&func=Set&newMsg=Hello%20from%20Gnokey!)
+[And click here](/r/example/hello$help&func=Set&newMsg=Hello%20from%20Gnokey!)
 	`
 }
 
diff --git a/hello_test.gno b/hello_test.gno
index de2367f..2be6411 100644
--- a/hello_test.gno
+++ b/hello_test.gno
@@ -4,14 +4,14 @@ import (
 	"testing"
 )
 
-func TestSetAndGet(t *testing.T) {
+func TestSetAndGet(cur realm, t *testing.T) {
 	// Test initial state
 	if got := Get(); got != "Hello, Gno!" {
 		t.Errorf("Expected default message, got %s", got)
 	}
 
 	// Test setting a new message
-	Set(cross, "Hello, Test!")
+	Set(cross(cur), "Hello, Test!")
 	if got := Get(); got != "Hello, Test!" {
 		t.Errorf("Expected 'Hello, Test!', got %s", got)
 	}