Added "Setting up the project manually" instructions

CONTRIBUTING.md

@@ -1,5 +1,38 @@
 # Contribution
 
+## Requirements
+
+- Python 3.6
+- Git CLI installed
+- Python, pip and git are available as commands (add to path if needed)
+
 ## Setting up the project manually
 
-## Setting up the project with PyCharm/IntelliJ
+Virtual environment will be created in *PyfaEnv* folder. Project will be cloned and run from the *PyfaDEV* folder. Separate virtual environment will be created so required libraries won't clutter the main python installation.
+
+Clone the repo 
+`git clone <repo> PyfaDEV`
+
+Create virtual environment
+`python -m venv PyfaEnv`
+
+Activate virtual environment
+
+```
+For cmd.exe: PyfaEnv\scripts\activate.bat
+For bash: source <venv>/bin/activate
+```
+> For other OSes check [Python documentation](https://docs.python.org/3/library/venv.html)
+
+Install requirements for the project from *requirements.txt*
+`pip install -r PyfaDEV\requirements.txt`
+
+Check that libs from *requirements.txt* are installed
+`pip list`
+
+Test that the project is starting properly
+`python PyfaDEV\pyfa.py`
+
+
+
+## Setting up the project with PyCharm/IntelliJ