diff --git a/docs/hello_nextflow/01_hello_world.md b/docs/hello_nextflow/01_hello_world.md
index dcbccd8d..26026780 100644
--- a/docs/hello_nextflow/01_hello_world.md
+++ b/docs/hello_nextflow/01_hello_world.md
@@ -18,19 +18,17 @@ Let's demonstrate this with a simple command that we run directly in the termina
 echo 'Hello World!'
 ```
 
-### 0.2. Now make it write the text output to a file
-
-```bash
-echo 'Hello World!' > output.txt
+```console title="Output"
+Hello World!
 ```
 
-### 0.3. Verify that the output file is there using the `ls` command
+### 0.2. Now make it write the text output to a file
 
 ```bash
-ls
+echo 'Hello World!' > output.txt
 ```
 
-### 0.4. Show the file contents
+### 0.3. Show the file contents
 
 ```bash
 cat output.txt
@@ -157,8 +155,9 @@ workflow {
 ```
 
 This a very minimal **workflow** definition.
-In a real-world pipeline, the workflow typically contains multiple calls to **processes** connected by **channels**.
-You'll learn how to add more processes and connect them by channels in Part 3 of this course.
+In a real-world pipeline, the workflow typically contains multiple calls to **processes** connected by **channels**, and the processes expect one or more variable **input(s)**.
+
+You'll learn how to add variable inputs later in this training module; and you'll learn how to add more processes and connect them by channels in Part 3 of this course.
 
 ### Takeaway
 
diff --git a/hello-nextflow/greetings.csv b/hello-nextflow/greetings.csv
index ab8a5901..c5889e19 100644
--- a/hello-nextflow/greetings.csv
+++ b/hello-nextflow/greetings.csv
@@ -1 +1,3 @@
-Hello,Bonjour,Holà
+Hello
+Bonjour
+Holà
diff --git a/hello-nextflow/hello-world copy.nf b/hello-nextflow/hello-world copy.nf
deleted file mode 100644
index 58913825..00000000
--- a/hello-nextflow/hello-world copy.nf	
+++ /dev/null
@@ -1,24 +0,0 @@
-#!/usr/bin/env nextflow
-
-/*
- * Use echo to print 'Hello World!' to a file
- */
-process sayHello {
-
-    input:
-        val $greeting
-
-    output:
-        path 'output.txt'
-
-    script:
-    """
-    echo '$greeting' > output.txt
-    """
-}
-
-workflow {
-
-    // emit a greeting
-    sayHello(params.greet)
-}