It depends on what book you are writing ... The following is ... It's best to make it in A4 or A3 size, because the paper in the printing factory is usually this size.

Whether A4 or A3 is made into a horizontal version and then the format-column,

2, content arrangement should pay attention to the distance from the outside and the center line. In addition, I think you must want to make a piece of paper with contents on both sides, but there will be some errors when the printer prints on both sides, so don't consider it.

3. Pay attention to the page numbers of two pages on each piece of paper. Beginners of it usually make mistakes in page numbers, so it is suggested to draw on the same piece of paper.

4. Use157g coated paper for the inner page. Just use 250 grams for the front cover and back cover.

The price is around 20 yuan (this is the estimate of black and white price and color in 40 yuan-30 different places).

In fact, paper doesn't have much money, mainly because it takes time to spend some money on printing ink.