Update README.md

desktop/km3book/README.md

@@ -14,3 +14,8 @@ needs to download a few GB of data, but consecutive runs will be faster:
 
 To access the JupterLab instance, click on the link shown in the terminal --
 and leave that terminal open!
+
+If you want to work with Jpp/aanet/km3pipe in the terminal inside Jupyter,
+create a new terminal window, ignore the error message and simply launch
+Bash by typing `bash`. You will have a fully working terminal session with
+all the software activated.
\ No newline at end of file