Advice Needed: Best Way to Build a Hospital Medicine Tracking App as a Beginner

Hi Dev Community!
I am a CS graduate. I want to build an industry-standard full-stack app for my portfolio on my own. Recently, I have learned the basics of PostgreSQL and JavaScript and am planning to learn the basics of Dart and Flutter before building my project. Though the internet has a bunch of resources, I often get stuck at some point. Here are some doubts that pinch me frequently:

1. What are the fundamentals I should learn before jumping into the project?

2. I want to integrate all the industry-standard layers like frontend, API, business logic, data access, and database. Also incorporate an automation layer in it. But I can’t do it fully on my own. I need AI’s assistance. As a beginner, how can I use AI effectively as a helping-buddy and at the same time become an optimal developer?

3. What should be the optimal strategies to build this app?

Any advice, resources, or feedback from those who have been down a similar road would be appreciated.

Thanks!