diff --git a/README.md b/README.md
index f611860..efdfad4 100644
--- a/README.md
+++ b/README.md
@@ -16,16 +16,21 @@ The QuAcK software can be downloaded on GitHub as a Git repository
 git clone https://github.com/pfloos/QuAcK.git
 ```
 
-Then, one must define the variable `QUACK_ROOT` and install [PySCF](https://pyscf.org) using `pip`
+Then, one must define the variable `QUACK_ROOT`. For example, 
+```
+export QUACK_ROOT=$HOME/Work/QuAcK
+```
+You must also install [PySCF](https://pyscf.org) (for example using `pip`)
 ```
 pip install pyscf
 ```
 
-PySCF is used for the computation of one- and two-electron integrals. 
+PySCF is used for the computation of one- and two-electron integrals (mainly).
 
 # Quick start
 
 ```
+QuAcK 💩 % cd $QUACK_ROOT
 QuAcK 💩 % python3 PyDuck.py -h
 usage: PyDuck.py [-h] -b BASIS [--bohr] [-c CHARGE] [--cartesian] [-fc FROZEN_CORE] [-m MULTIPLICITY] [--working_dir WORKING_DIR] -x XYZ