I am talking about using definite and indefinite articles with uncountable nouns and also in of-phrases. I would be very grateful if anyone could explain it to me.
These two examples I found on the internet they refer to the usage of articles with uncountable nouns:
The position requires a knowledge of German. The knowledge of computer software is very useful nowadays.
I am not sure why the first sentence uses the indefinite article while the second one the definite one.
When it comes to of-phrases (I apologize for calling them this way, I don't know the proper name for this type of constructions).
A chapter of a book. / The chapter of a book.
I found an article, which says that if the noun is followed by a prepositional phrase (of/in/to…), it is made definite and takes the definite article. Does it mean that the first noun always require the definite article even if it is the first mention of a noun? The chapter of a book. The name of a movie. etc.