"Grammar is not to be feared, nor to be mastered, but rather to be utilised when necessary."
Grammatik | Grammar
Here's one rather unique grammar point with a simple rule you can use to easily understand when to use ud and when to use ude. Other examples include:
You read correctly. Here's an entire section dedicated to those often overlooked and misunderstood commas.
There are quite a few words in Danish that carry greater importance than others. For example, in some cases you have several words with the same meaning, but different usage, or two words in Danish where there only exists one in English.
Here are the most common explained simply with exercises.