Does the Quran have any direct verses about books? Can the Quran guide us on what kinds of books to read? How can a book that was revealed about 1400 years ago tell us about which book genres are useful and which are not? 
In this text, we will study the status of reading books in the Quran and in Islamic teachings.
The first thing about books is the fact that the Quran, the miracle of Prophet Muhammad (PBUH&HP) is a book. Therefore, there is no doubt that there are no problems with reading books in Islam. But, the question that if there is any limitations in reading different types of books is considerable. 

Pointing out about books in the Quran

The word book has been used a lot in the Quran and has been used for three different meanings. Yet, all of them are used for a thing that records concepts and meanings and transfers them to the audience. In all different meanings of the book, it has been mentioned as a medium. The three different types of books mentioned in the Quran are as follows: 

1-    The books that contain religious rules and laws. [1]
2-    The books that record the deeds and actions of people. [2]
3-    The book in which all the events and details of this universe have been written and is kept by Allah. [3]

Writing books

Writing books is also an important point in the eyes of the Quran, as books are crucial means of conveying messages and transferring history to the next generations. They are also great means of spreading knowledge, wisdom, science, etc. the status of books and writing are so high in the eyes of Allah (SWT) that there is a chapter in the Quran called “Pen” (Qalam) in which Allah (SWT) swears by pens and what is written by it. [4] 
However, it is also very important that the written content should be useful, based on truth, and produced for the growth and improvement of human beings: 
“So woe to them who write the Book with their hands and then say, ‘This is from Allah,’ that they may sell it for a paltry gain. So woe to them for what their hands have written, and woe to them for what they earn!” (2: 79)

This can be a very important lesson and point to all of those who use their writing talent and produce written material for their audience. The above verse shows how enormous the effect of written products are on the readers.  

What does the Quran say about reading books?

Reading is also a very important point that is mentioned in the Quran. The most unique verse of the Quran that shows the importance of reading is, according to some Islamic scholars, the first verse of the Quran that was revealed to Prophet Muhammad (PBUH&HP): 
“Read in the Name of your Lord who created; Created man from a clinging mass. Read, and your Lord is the most generous, who taught by the pen, taught man what he did not know.” (96: 1-5)

The above few verses show how learning knowledge and wisdom is connected to writing and reading. It is by writing that human beings transfer their thoughts and learnings to others, and it is by reading those writings that people learn from others. It is by reading that people think, contemplate, and come up with new ideas which lead to more learning, wisdom, discovery and inventions. Therefore, Allah compares those who seek knowledge and those who do not and asks us: 
“… Say, ‘Are those who know equal to those who do not know?’ Only those who possess intellect take admonition.” (39:9) 

Which books to read?

Despite the importance of gaining knowledge through reading in Islam [i], still we might ask if all the books available in the market are useful, worth reading and lawful (Halal) to read in Islam. 

The point is that the Quran does not mention all different book genres and does not discuss each genre in detail. But, it provides specific frameworks that work as a type of criterion. Knowing the criterion helps us to distinguish which books are useful for us and which ones can harm our soul and spirituality. 
For example, the Quran is not against stories or novels since the Quran itself is full of amazing stories, some of which are examples or stories [5]. Allah (SWT) claims that He is the best storyteller when He says: 

“We will recount to you the best of narratives in what We have revealed to you of this Quran, and indeed prior to it you were among those who are unaware [of it].” (12: 3)

Reading such books will result in many positive effects on our mind and soul. As Imam Ali (AS) says, “The greatest peace is obtained by reading books”[6]. Also, at the times of difficulties and hardships, sometimes one finds no remedy other than taking refuge in books, perhaps to find a way out; As Imam Sadiq (AS) puts, “There will be chaotic days when people would not find peace unless within their books” [7]. 

However, this does not mean that reading all types of storybooks, novels or myths are useful. Allah mentions in the Quran that real believers are those who “avoid vain talk” (23: 3). Therefore, books in which we can find parts that would waste our time or those that contain stories, chapters, or lines that may harm human soul and spirituality are not recommended to read. Apart from the books that may harm our soul, reading and learning can be considered as a sign of a Muslim. 

Notes:
[i] “Seeking knowledge is an obligation upon Muslims.” Prophet Muhammad (PBUH&HP) [8]. 

References: 

1. The Quran (38:29)
2. The Quran (45:29)
3.  The Quran (10:61)
4. The Quran (68:1)
5. The Quran (39:27)
6. Ghurar al-Hikam wa Durar al-Kalim, Hadith no.8126.
7.  Muhammad ibn Ya'qub al-Kulayni, al-Kafi, vol.1, p.52.
8.  ibid, p.83.
    

1. Speak at the Right Time

Don’t speak when it’s not a good time to talk. 

Ghurar al-Hikam wa Durar al-Kalim, Hadith no. 10274. 

2. A Day of Celebration

Any day on which you don’t commit sins or disobey Allah is a day of celebration (Eid). 

Nahj al-Balagha, Wisdom no.428. 

3. The Effect of Nature 

Looking at nature brings happiness.

Nahj al-Balagha, Wisdom no.400. 

4. Two Valuable Blessings in Imam Ali (AS)'s Words 

There are two things whose worth you will find out only after losing them; youth and health.

Ghurar al-Hikam wa Durar al-Kalim, vol. 1, p.449.

5. Difference with Children 

Do not impose your own traditions on your children, since they are living in a different era than yours. 

Ibn abi al-Hadid, Interpretation of Nahj al-Balagha, vol.20, p.286. 

6. Who to Consult and Who not to Consult

Consult with your wise enemy, but avoid your ignorant friend’s advice. 

Ghurar al-Hikam wa Durar al-Kalim, Hadith no.2471.

7. The Best Candidates to Consult

The wise, knowledgeable, experienced, and prudent ones are the best to consult with. 

Ghurar al-Hikam wa Durar al-Kalim, Hadith no.4990.

8. When to Consult 

Consult before making decisions and think before taking action.

Ghurar al-Hikam wa Durar al-Kalim, Hadith no.5754.

9. Be Patient with Your Job's Difficulties 

If you don’t endure the difficulties of working, you are made to bear the misfortunes of poverty.

Ghurar al-Hikam wa Durar al-Kalim, Hadith no.8987.

 10. Be Kind

Be kind to the less privileged ones than you, so that your superiors be kind to you. 

Muhammadi Reyshahri, Mizan al-Hikmah, Hadith no. 6960. 

11. Respect Your Father and Teacher

Rise in respect to your father and your teacher, even if you possess a high status. 

Ghurar al-Hikam wa Durar al-Kalim, Hadith no.2341.

12. The Foundation of the World according to Imam Ali (AS)

The world is founded on justice. 

Muhammadi Reyshahri, Mizan al-Hikmah, Hadith no. 11955. 

13. Observe Justice 

The fairest among you is the one who observes justice between people while in power.

Ghurar al-Hikam wa Durar al-Kalim, Hadith no.3242.

14. Treat others as you expect to be treated

The fairest manner is to treat people the way you expect them to treat you. 

Ghurar al-Hikam wa Durar al-Kalim, Hadith no.3170.

15. Quality is more important than Quantity for Imam Ali (AS)

Don’t worry about how fast you do a job; instead, observe the best quality in whatever you do. 

Ibn abi al-Hadid, Interpretation of Nahj al-Balagha, vol.20, p.267. 

16. The Worst Homeland

The worst homeland is the one that doesn’t keep its citizens safe. 

Ghurar al-Hikam wa Durar al-Kalim, Hadith no.5712.

17. How to Start a Deed

You need to have enough knowledge of a deed before doing it. 

Nahj al-Bakagha, p.171.  

18. Do Every Deed on its Own Time 

Do every day’s work on that specific day, since each task is due to its special day. 

Nahj al-Balagha, letter no.53.  

19. Keep Your Promises

The ones who don’t keep their promise do not believe in Allah. 

Ghurar al-Hikam wa Durar al-Kalim, Hadith no.9577.

20. Don't Break Your Promise to Children 

It’s beneath you to make a promise to your child and not keep it. 

Al-Shaykh al-Saduq, Al-Amali, p.342. 

21. Be Childlike 

If you have a child, be childlike with him/her. 

Usul al-Kafi, vol.6, p.50. 

22. Yesterday, Tomorrow, Today 

Yesterday is gone, tomorrow is yet to come, while today is a precious chance for you to make the most of it.

Ghurar al-Hikam wa Durar al-Kalim, Hadith no.9840.

23. An Unplanted Land

The heart of the teenage is like an unplanted land that is ready to receive any seed planted in it. 

Nahj al-Balagha, letter no. 31. 

24. Read Books

The greatest peace is obtained by reading books. 

Ghurar al-Hikam wa Durar al-Kalim, Hadith no.8126.

25. Scholars' Heaven 

Find the scholars’ heaven within the pages of the books. 

Ghurar al-Hikam wa Durar al-Kalim, Hadith no.991.

26. The Perfection of Religion

The perfection of religion is in seeking knowledge and making use of it. 

Usul al-Kafi, vol.1, p.30.

27. What is Said not Who Said it 

Pay attention to what is said, not who is saying it. 

Ghurar al-Hikam wa Durar al-Kalim, Hadith no.5048.

28. Think instead of Talking

Try to ponder and understand instead of quoting. 

Muhammadi Reyshahri, Mizan al-Hikmah, Hadith no. 3355.

29. Help Others

You will be helped, the same way as you help others. 

Ghurar al-Hikam wa Durar al-Kalim, Hadith no.7209.

30. The Faithful as Defined by Imam Ali (AS)

The faithful who help the destitute in the hardships and misfortunes of their lives are loved most by Allah.

Tuhaf al-Uqul, p.376.

31. Peace is Better Than War

I found peace, so far as it won’t degrade Islam, more beneficial than war. 

Ghurar al-Hikam wa Durar al-Kalim, Hadith no.10138.

32. You Make a Mistake, too!

Don’t be happy about the mistakes of others, since you are not perfect either. 

Ghurar al-Hikam wa Durar al-Kalim, Hadith no.10294.

33. Respect to be Respected 

Talk respectfully to people to hear respectful responses. 

Ghurar al-Hikam wa Durar al-Kalim, Hadith no.2568.

34. The Power of Optimism 

Optimism reduces despair and keeps you away from committing sins. 

Ghurar al-Hikam wa Durar al-Kalim, Hadith no.4823.

 35. Do not Measure Truth Based on People 

What is right is not distinguished by the people; You should first know what is right to find the ones following it.

al-Fattal al-Neyshaburi, Rawḍat al-wāʿiẓīn wa baṣīrat al-muttaʿiẓīn, p.31.

36. Be at Peace

Whoever avoids holding grudges, his/her heart and mind will remain at peace. 

Ghurar al-Hikam wa Durar al-Kalim, Hadith no.8548.

37. Be Thankful and Patient 

Be thankful to Allah on your days of comfort and happiness, and be patient on the days of difficulty and hardship.

Ghurar al-Hikam wa Durar al-Kalim, Hadith no.7148.

38. The Precious Blessing of Health 

Health is more precious than any other of Allah’s blessings. 

Ghurar al-Hikam wa Durar al-Kalim, p.483.

39. Women in Islam

Women are Allah’s trusts upon you, do not hurt them, and do not put pressure on them.

Mustadrak al-Wasail, vol.2, p.551.

40. Make the most of Your Happy Moments 

Enjoy your moments of happiness with all your heart to help you at the time of sadness. 

Ibn abi al-Hadid, Interpretation of Nahj al-Balagha, vol.20, p.286.