diff --git a/001-gno-cli/README.md b/001-gno-cli/README.md
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+# Getting Started with Gno CLI
+
+In this section, you will learn to use the `gno` CLI to write and test Gnolang packages. This part does not rely on a blockchain; instead, it operates solely on the GnoVM.
+
+## Steps
+
+* Use `gno --help` to explore available commands and options.
+* Use `gno test .` to test your Gnolang packages.
+* For additional features, explore `gno doc`, etc.
+
+Enjoy the journey of discovering and mastering the Gno CLI!
diff --git a/001-gno-cli/hello.gno b/001-gno-cli/hello.gno
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+++ b/001-gno-cli/hello.gno
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+package hello
+
+func Sum(a, b int) int {
+	return a + b
+}
+
+func Greetings(name string) string {
+	return "Hello " + name + "!"
+}
diff --git a/001-gno-cli/hello_test.gno b/001-gno-cli/hello_test.gno
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+++ b/001-gno-cli/hello_test.gno
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+package hello
+
+import "testing"
+
+func TestSum(t *testing.T) {
+	got := Sum(1, 2)
+	expected := 3
+	if got != expected {
+		t.Errorf("exected %d, got %d", expected, got)
+	}
+}