The action of reading has several different purposes, and they can be divided into two main reasons: Learning and recreation.
When reading for recreational purposes, we can read for pleasure or for personal reasons, a novel, a short story, a newspaper, etc.
When reading for learning, we have some other purposes to explain, you can read to find general information such as what a book is mostly about, to find a specific topic in a book or article, to learn subject matter that is required for a class, to critically evaluate a text, and to read for practical application.
They are more than four, you can narrow down the list to the most suitable for you.