Firstly - DON'T WORRY
Raw feeding is often called BARF, RMB, Prey Model Feeding etc.. The important thing is that it's all raw and you will, over time, discover what is best for you and your dog.
The best ratio for raw feeding is 80% meat, 10% bone and 10% offal. If you include tripe in their diet then you don't need any additives or even any vegetables (although there's nothing stopping you adding vegetables, herbs and other botanicals to their diet ).
Think about making their diet balanced over time. You don't have to fit everything in just one bowl. And if you get it wrong, it really doesn't matter too much as you will still be feeding a better diet than if you were feeding kibble.