Glad to have you join the Community. I'll be happy to provide the info you need and point you towards the right direction.
In order to link non-profits with budgets, I recommend utilizing the classes feature in order to simplify your tracking. I encourage you to check out the following article that shows you: How to utilize classes as a non-profit. You're welcome to ask questions as you go through the article.
I'll be on standby in case you have other questions. Enjoy the rest of your day!