If you're on Windows, watch this video. Otherwise:

Git is the primary collaboration software for software development -- like Google Docs for programmers.

To check whether you have it installed go to your terminal, type “git” and hit enter. If you don’t see a bunch of instructions (see pic below), you don’t have git installed and need to install Git

Create a GitHub account if you don’t already have one.

Go to your terminal, type “python3” and hit enter. If you don’t see a “python prompt” (see pic below) then you need to install Python 3. Hit control-d or call the python exit() function to exit.

git clone https://github.com/justinmoon/digital-cash.git
cd digital-cash
python3 -m venv venv
source venv/bin/activate
python3 -m pip install -r requirements.txt
jupyter notebook

This will open up your web browser to a page that looks like the image below. This is Jupyter Notebook, which is basically a little website that’s run on only your computer.

Click the "PNGCoin Workbook.ipynb" link to follow along with this first lesson.

Check out this tutorial to learn more about using Jupyter Notebook.

If you stop Jupyter for any reason and later want to restart it:

cd digital-cash
source venv/bin/activate
jupyter notebook