diff --git a/.gitignore b/.gitignore
index 57cb71b..d3dc988 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,6 +10,7 @@ __pycache__/
 .Python
 build/
 results/
+vepy3/
 nvd/
 develop-eggs/
 dist/
diff --git a/.req.txt.swp b/.req.txt.swp
new file mode 100644
index 0000000..1f5b83a
Binary files /dev/null and b/.req.txt.swp differ
diff --git a/README.md b/README.md
index 4a4b0de..02b7ed4 100644
--- a/README.md
+++ b/README.md
@@ -14,11 +14,19 @@ Python script for preparing NVD JSON feeds and importing in Local Database | Pyt
   
   d) provides query capabilities for this CVEs database.
 
-Before Script execution create following directories.
+### Before Script execution create following directories.
 
 `mkdir results`
 `mkdir nvd`
 
+### Create Virtual Env:
+
+- `sudo apt install virtualenv`
+- `virtualenv --python=python3 vepy3`
+- `source vepy3/bin/activate`
+- `python -m pip install -r requirements.txt`
+- `python ./script.py COMMAND PARAMETERS AND SWITCHES`
+
 Usage examples: 
 
 - Download, parse and save in CSV files all CVEs from NIST NVD:
diff --git a/req.txt b/requirements.txt
similarity index 100%
rename from req.txt
rename to requirements.txt