what do i do with the postgres server do i create a database, there are so many abstractions.

there 2 things you can do next:

1. Deploy this in real production check out this medium article. or trying to deploy the smaller one for free check this one and this one here's example of mine https://simple-fastapi-template.herokuapp.com/
2. Learn How Vue works for frontend and postgres server works

also what goals do you want to make this app?

Thank you for your response, I will learn Vue and Postgres server.
Although I want to learn fast API for skill purposes, I also want to currently use it to monitor data and changes in the data to sort of create an integrated data management/ monitoring system. Probably integrating another API with it as well.

Also, with the vue JS, do I have to input a new file with the code or modify already existing frontend files..

you can do both with Vue,js,

just keep in mind that vue js has higher entry barrier for beginner to learn but really easy to learn after that and scale up to very big production.

Just to be clear, what's the best way to go about developing this repo? Like what's a clear path to learning to improving and changing the customizable parts? I appreciate any feedback!

I think that the main point is to make the front-end interact with all the api's exposed in localhost:80/docs by adding more views in
full-stack-fastapi-postgresql/frontend/src/router.ts

it would be nice to have an example to copy and paste for that kind of simple interaction with Vue