Rails Design Patterns/Good practise

Hi to all, I am a junior developer who has worked on differents rails
application but never wrote one.

Now, I would like to develop my first "big" rails app. I would love to
know if someone has some links that suggest good patterns, organization
ecc...

Hello,

You can try to read the book https://pragprog.com/book/d-kegrap/growing-rails-applications-in-practice. There are described some techniques and practices which can be useful in real application.