diff --git a/main.nf b/main.nf
deleted file mode 100644
index 8b7649f94..000000000
--- a/main.nf
+++ /dev/null
@@ -1,8 +0,0 @@
-include { GREETING_WORKFLOW } from './workflows/greeting'
-
-workflow {
-    Channel.from('Alice', 'Bob', 'Charlie') | GREETING_WORKFLOW
-
-    GREETING_WORKFLOW.out.greetings_ch.view { "Original: $it" }
-    GREETING_WORKFLOW.out.timestamped_ch.view { "Timestamped: $it" }
-}
diff --git a/nf-training/hello.nf b/nf-training/hello.nf
index c7772a554..948aea416 100644
--- a/nf-training/hello.nf
+++ b/nf-training/hello.nf
@@ -1,7 +1,6 @@
 #!/usr/bin/env nextflow
 
 params.greeting = 'Hello world!'
-greeting_ch = Channel.of(params.greeting)
 
 process SPLITLETTERS {
     input:
@@ -30,6 +29,7 @@ process CONVERTTOUPPER {
 }
 
 workflow {
+    greeting_ch = Channel.of(params.greeting)
     letters_ch = SPLITLETTERS(greeting_ch)
     results_ch = CONVERTTOUPPER(letters_ch.flatten())
     results_ch.view{ it }
diff --git a/nf-training/hello_py.nf b/nf-training/hello_py.nf
index ddfa9a900..e89f213a5 100644
--- a/nf-training/hello_py.nf
+++ b/nf-training/hello_py.nf
@@ -1,7 +1,6 @@
 #!/usr/bin/env nextflow
 
 params.greeting = 'Hello world!'
-greeting_ch = Channel.of(params.greeting)
 
 process SPLITLETTERS {
     input:
@@ -36,6 +35,7 @@ process CONVERTTOUPPER {
 }
 
 workflow {
+    greeting_ch = Channel.of(params.greeting)
     letters_ch = SPLITLETTERS(greeting_ch)
     results_ch = CONVERTTOUPPER(letters_ch.flatten())
     results_ch.view{ it }
diff --git a/nf-training/modules.hello.nf b/nf-training/modules.hello.nf
index d3080845a..c80bc0ac3 100644
--- a/nf-training/modules.hello.nf
+++ b/nf-training/modules.hello.nf
@@ -1,12 +1,12 @@
 #!/usr/bin/env nextflow
 
 params.greeting  = 'Hello world!'
-greeting_ch = Channel.of(params.greeting)
 
 include { SPLITLETTERS   } from './modules.nf'
 include { CONVERTTOUPPER } from './modules.nf'
 
 workflow{
+    greeting_ch = Channel.of(params.greeting)
     letters_ch = SPLITLETTERS(greeting_ch)
     results_ch = CONVERTTOUPPER(letters_ch.flatten())
     results_ch.view{ it }
diff --git a/nf-training/script1.nf b/nf-training/script1.nf
index 047c688ce..bcc8f9768 100644
--- a/nf-training/script1.nf
+++ b/nf-training/script1.nf
@@ -4,4 +4,6 @@ params.reads = "$projectDir/data/ggal/gut_{1,2}.fq"
 params.transcriptome_file = "$projectDir/data/ggal/transcriptome.fa"
 params.multiqc = "$projectDir/multiqc"
 
-println "reads: $params.reads"
+workflow {
+    println "reads: $params.reads"
+}
diff --git a/nf-training/script2.nf b/nf-training/script2.nf
index c92791b67..7680a0ab1 100644
--- a/nf-training/script2.nf
+++ b/nf-training/script2.nf
@@ -8,15 +8,6 @@ params.transcriptome_file = "$projectDir/data/ggal/transcriptome.fa"
 params.multiqc = "$projectDir/multiqc"
 params.outdir = "results"
 
-log.info """\
-    R N A S E Q - N F   P I P E L I N E
-    ===================================
-    transcriptome: ${params.transcriptome_file}
-    reads        : ${params.reads}
-    outdir       : ${params.outdir}
-    """
-    .stripIndent(true)
-
 /*
  * define the `INDEX` process that creates a binary index
  * given the transcriptome file
@@ -35,5 +26,14 @@ process INDEX {
 }
 
 workflow {
+    log.info """\
+    R N A S E Q - N F   P I P E L I N E
+    ===================================
+    transcriptome: ${params.transcriptome_file}
+    reads        : ${params.reads}
+    outdir       : ${params.outdir}
+    """
+    .stripIndent(true)
+
     index_ch = INDEX(params.transcriptome_file)
 }
diff --git a/nf-training/script3.nf b/nf-training/script3.nf
index 5b606b491..21f33d9ae 100644
--- a/nf-training/script3.nf
+++ b/nf-training/script3.nf
@@ -8,13 +8,15 @@ params.transcriptome_file = "$projectDir/data/ggal/transcriptome.fa"
 params.multiqc = "$projectDir/multiqc"
 params.outdir = "results"
 
-log.info """\
-    R N A S E Q - N F   P I P E L I N E
-    ===================================
-    transcriptome: ${params.transcriptome_file}
-    reads        : ${params.reads}
-    outdir       : ${params.outdir}
-    """
-    .stripIndent()
+workflow {
+    log.info """\
+        R N A S E Q - N F   P I P E L I N E
+        ===================================
+        transcriptome: ${params.transcriptome_file}
+        reads        : ${params.reads}
+        outdir       : ${params.outdir}
+        """
+        .stripIndent()
 
-read_pairs_ch = Channel.fromFilePairs(params.reads)
+    read_pairs_ch = Channel.fromFilePairs(params.reads)
+}
diff --git a/nf-training/script4.nf b/nf-training/script4.nf
index 92e913eb5..bb0407318 100644
--- a/nf-training/script4.nf
+++ b/nf-training/script4.nf
@@ -8,15 +8,6 @@ params.transcriptome_file = "$projectDir/data/ggal/transcriptome.fa"
 params.multiqc = "$projectDir/multiqc"
 params.outdir = "results"
 
-log.info """\
-    R N A S E Q - N F   P I P E L I N E
-    ===================================
-    transcriptome: ${params.transcriptome_file}
-    reads        : ${params.reads}
-    outdir       : ${params.outdir}
-    """
-    .stripIndent()
-
 /*
  * define the `INDEX` process that creates a binary index
  * given the transcriptome file
@@ -49,6 +40,15 @@ process QUANTIFICATION {
 }
 
 workflow {
+    log.info """\
+    R N A S E Q - N F   P I P E L I N E
+    ===================================
+    transcriptome: ${params.transcriptome_file}
+    reads        : ${params.reads}
+    outdir       : ${params.outdir}
+    """
+    .stripIndent()
+
     Channel
         .fromFilePairs(params.reads, checkIfExists: true)
         .set { read_pairs_ch }
diff --git a/nf-training/script5.nf b/nf-training/script5.nf
index dc9d4ac78..a3d36d55a 100644
--- a/nf-training/script5.nf
+++ b/nf-training/script5.nf
@@ -8,15 +8,6 @@ params.transcriptome_file = "$projectDir/data/ggal/transcriptome.fa"
 params.multiqc = "$projectDir/multiqc"
 params.outdir = "results"
 
-log.info """\
-    R N A S E Q - N F   P I P E L I N E
-    ===================================
-    transcriptome: ${params.transcriptome_file}
-    reads        : ${params.reads}
-    outdir       : ${params.outdir}
-    """
-    .stripIndent()
-
 /*
  * define the `INDEX` process that creates a binary index
  * given the transcriptome file
@@ -68,6 +59,15 @@ process FASTQC {
 }
 
 workflow {
+    log.info """\
+    R N A S E Q - N F   P I P E L I N E
+    ===================================
+    transcriptome: ${params.transcriptome_file}
+    reads        : ${params.reads}
+    outdir       : ${params.outdir}
+    """
+    .stripIndent()
+
     Channel
         .fromFilePairs(params.reads, checkIfExists: true)
         .set { read_pairs_ch }
diff --git a/nf-training/script6.nf b/nf-training/script6.nf
index 2bc5fe7bf..a3ac679c4 100644
--- a/nf-training/script6.nf
+++ b/nf-training/script6.nf
@@ -8,15 +8,6 @@ params.transcriptome_file = "$projectDir/data/ggal/transcriptome.fa"
 params.multiqc = "$projectDir/multiqc"
 params.outdir = "results"
 
-log.info """\
-    R N A S E Q - N F   P I P E L I N E
-    ===================================
-    transcriptome: ${params.transcriptome_file}
-    reads        : ${params.reads}
-    outdir       : ${params.outdir}
-    """
-    .stripIndent()
-
 /*
  * define the `INDEX` process that creates a binary index
  * given the transcriptome file
@@ -83,6 +74,14 @@ process MULTIQC {
 }
 
 workflow {
+    log.info """\
+    R N A S E Q - N F   P I P E L I N E
+    ===================================
+    transcriptome: ${params.transcriptome_file}
+    reads        : ${params.reads}
+    outdir       : ${params.outdir}
+    """
+    .stripIndent()
     Channel
         .fromFilePairs(params.reads, checkIfExists: true)
         .set { read_pairs_ch }
diff --git a/nf-training/script7.nf b/nf-training/script7.nf
index de1beeafb..4b0799e29 100644
--- a/nf-training/script7.nf
+++ b/nf-training/script7.nf
@@ -7,14 +7,6 @@ params.reads = "$projectDir/data/ggal/gut_{1,2}.fq"
 params.transcriptome_file = "$projectDir/data/ggal/transcriptome.fa"
 params.multiqc = "$projectDir/multiqc"
 params.outdir = "results"
-log.info """\
-    R N A S E Q - N F   P I P E L I N E
-    ===================================
-    transcriptome: ${params.transcriptome_file}
-    reads        : ${params.reads}
-    outdir       : ${params.outdir}
-    """
-    .stripIndent()
 
 /*
  * define the `INDEX` process that creates a binary index
@@ -82,6 +74,14 @@ process MULTIQC {
 }
 
 workflow {
+    log.info """\
+    R N A S E Q - N F   P I P E L I N E
+    ===================================
+    transcriptome: ${params.transcriptome_file}
+    reads        : ${params.reads}
+    outdir       : ${params.outdir}
+    """
+    .stripIndent()
     Channel
         .fromFilePairs(params.reads, checkIfExists: true)
         .set { read_pairs_ch }
@@ -90,8 +90,8 @@ workflow {
     quant_ch = QUANTIFICATION(index_ch, read_pairs_ch)
     fastqc_ch = FASTQC(read_pairs_ch)
     MULTIQC(quant_ch.mix(fastqc_ch).collect())
-}
 
-workflow.onComplete {
+    workflow.onComplete {
     log.info ( workflow.success ? "\nDone! Open the following report in your browser --> $params.outdir/multiqc_report.html\n" : "Oops .. something went wrong" )
 }
+}