Here are some tips to write a good book to be published anywhere, even in the Hogwarts Library, and even in the current Hogwarts Library:-

1) Choose a good topic- Choose interesting topics that readers may love to read about or find useful in some way.

2) Choose a good book title- Give your book an eye-catching and curiosity-raising title, to attract the attention of a large number of readers.

3) Carefully target your audience- Take care to think about your possible audience and their needs and write the book accordingly, in order to target your audience and get them to like, read and appreciate your book.

4) Use an eye-catching flashy description of the book or a very teasing one- Write a curious or flashy description of the book to arouse interest and curiosity among your possible readers and make them open the book through it. Leave information to the imagination and tease your readers through the description to make them want to see more and thus read the book.

5) Use an interesting cover photo illustration- If you are feeling creative, your cover photo illustration of your book can do much the same thing as your book description to attract your target audience.

6) Use reverse psychology to appeal to your target audience's sentiments- I will not say much on this one as this is a psychological trick that many people often use, but you can use it in your book, to appeal to the sentiments of the people who are going to read your book or of your target audience, to make your book more popular and to get more readers.

7) Use respectful language- A book with respectful language and written in a polite tone is always more likely to be read and appreciated, as it makes the readers feel valued and respected, which is something everyone wants to feel, anywhere. A book with disrespectful language or a comdemning or impolite tone or a condescending tone is likely to make the readers feel patronized or inferior or disrespected, which is going to make you lose readers sooner than you can say "Hello" .

7) Use humor- Humor is something which makes anyone entertained or makes them feel happy and that is something that almost everyone looks forward to as it provides the much needed respite to almost everyone, when they pick up a book, in their much serious or mundane lives. You can use humor in your writing to attract people and make your target audience join you in enlarging the book's readers for you by using the humor to attract people, as humor is common to everybody and people of any type in being liked and it is like a common language for all kinds of people, no matter what their interests are. You can also use humor in your illustrations and in the book description or in your book's cover photo, or use it in the images and pictures in your book to intersperse much more serious reading content with light entertaining humor to increase the interest and lighten the mood and enhance the attention of your readers. It also helps your more serious readers to rest their minds and brains and refresh themselves in between reading the other serious content of your book, while still reading your book.

8) Use easy deliverable language- Use language that is easy to understand, grasp and also deliver, while also paying attention to your readers and your target audience, and their understanding and reading capabilities. This will attract more readers than you can imagine as many readers will use your book to grasp concepts in an easier and lightheaded manner and to deliver the concepts in an easy language from your book to others. This especially applies to academic books or other informative books or any other reference books on any topic.

9) Structure Your Book Well- Structure your book, properly. Start with an introduction, and then write the content and name each chapter of your book accordingly and properly, and put them in the right places, arranging them correctly according to the flow of the book, and then add a closing note or any epilogue if you wish, any footnotes or descriptions in the end if you want, and then finally add any acknowledgements, disclaimers or credits in the end.This makes your book easy to read and helps your readers to understand your information well and find it easier to look for information in your book.

10) Be Creative- Use your creativity and imagination to make the best book possible that you can write as your creativity and imagination will take your book to heights that even you did not think or imagine was possible. It will make you write content, that you never thought was possible for you to write, or think and imagine. Go with the flow and make your best book possible with the least effort with the most imagination.

11) Work hard, and never rest without appropriate efforts as well, towards the book, from your end-  However, this is not to say that you must not put effort into writing your book. Increasing imagination helps to decrease the effort required to write a book, but that does not mean you must never put effort as putting a sufficient, good amount of effort, is required along with your hard work and constancy and determination, and patience, to make the best book possible and as your hard work and effort will always help you write a very good book and your hard work, determination and patience will always pay off in the end, as a good book always attracts a lot of good and great readers. You must never skimp on your effort towards writing any books, because your effort, patience and constancy and determination, determines the constancy and the effort visible in the creation and publication of the book as well, and this constancy is what also determines the success of the book in a market, along with a healthy bout of creativity and a very good and healthy imagination.

Lastly, 12) Do Not expect success- as this will ruin your book because of your paranoia and prevent you from remaining lighthearted while writing the book and will make your book difficult to understand and read as you will put in too much effort, which is also visible, and will make it difficult for your readers to take it in a lighthearted way and understand and enjoy it.