Hi Jesse, thanks for reading!
Getting Postgres running locally is so machine-specific that I don’t think I could write a comprehensive tutorial that applies to everyone. Plus, there are already a lot of great tutorials out there.
That said, here’s my experience the first time I tried to set up Postgres locally: https://medium.com/@BennettGarner/launching-your-first-postgresql-server-on-ubuntu-16-04-a-guide-from-a-novice-for-beginners-89e6076848c0
Feel free to tweet at or email me if you have trouble, and I’ll try to help.