If you followed through and things have worked out, then you should now have a simple Agent Based Model that represents a set of entities that move around in an environment, interacting with the environment and each other.
Here is a link to a GitHub repository with some example code: https://github.com/agdturner/ccg-course-python-intro
Developing the code by following instructions puts into practise some of the theory introduced in other pages. If you got things working, then you could use your skills and knowledge to develop the model in interesting ways without needing detailed instructions.
I hope you found these learning resources useful and that you put you coding skills to good use :)