Marie: perhaps Rebecca means more detailed information on, for instance, why a sentence is structured in a certain way or, (something that bothers me), whether word order can be altered in some sentences and still be correct.
I sometimes have to go elsewhere to search out these answers (which in itself is not a bad thing, I have learned much from these forays), but sometimes I am still unsure. As an example, it appears to me that words like "también" are placed either at the beginning or the end of a sentence in Spanish, whereas in English we often place them between nouns and verbs, or other places...
The Sun Also Rises
También el Sol Amanace