first_steps.markdown

@@ -11,6 +11,14 @@ step by step the use of the software.
 
 Some more notebooks are provided in some folders of *examples/Ateliers*
 
+_For those using virtual environment, there is a command to run to tell the notebook server where to find your environment:_
+```shell
+workon lmgc90
+pip install ipykernel
+python -m ipykernel install --user --name=lmgc90
+```
+_It will then be possible to select the _lmgc90_ kernel in the _Kernel/Change Kernel_ menu._
+
 ### Linux ###
 
 To read the notebooks, open a terminal there and run: