diff --git a/doc/TP_experimental_biologists.md b/doc/TP_experimental_biologists.md
index ca1fc3fd596d5a5500ed3e3fd1de17ec8cb269a6..ec5d07f845e397a89f33ba2a75957e956e1ff2c9 100644
--- a/doc/TP_experimental_biologists.md
+++ b/doc/TP_experimental_biologists.md
@@ -11,9 +11,7 @@ output:
latex_engine: xelatex
---
-# TP for experimental biologists
-
-The Goal of this practical is to learn how to build your own pipeline with nextflow and using the tools already *wrapped* in Docker and SGE.
+The Goal of this practical is to learn how to build your own pipeline with nextflow and using the tools already *wrapped*.
For this we are going to build a small RNASeq analysis pipeline that should run the following steps:
- remove Illumina adaptors
@@ -21,13 +19,17 @@ For this we are going to build a small RNASeq analysis pipeline that should run
- build the index of a reference genome
- estimate the number of RNA fragments mapping to the transcript of this genome
-## Initialize your own project
+# Initialize your own project
You are going to build a pipeline for you or your team. So the first step is to create your own project.
Instead of reinventing the wheel, you can use the [pipelines/nextflow](https://gitlab.biologie.ens-lyon.fr/pipelines/nextflow) as a template.
To easily do so, go to the [pipelines/nextflow](https://gitlab.biologie.ens-lyon.fr/pipelines/nextflow) repository and click on the [**fork**](https://gitlab.biologie.ens-lyon.fr/pipelines/nextflow/forks/new) button.
+
+
In git, the [action of forking](https://git-scm.com/book/en/v2/GitHub-Contributing-to-a-Project) means that you are going to make your own private copy of a repository. You can then write modifications in your project, and if they are of interest for the source repository (here [pipelines/nextflow](https://gitlab.biologie.ens-lyon.fr/pipelines/nextflow)) create a merge request. Merge request are send to the source repository to ask the maintainers to integrate modifications.
+
+