If the novel in the bookstore was marked as a serial, one could read the original novel first and wait for the serial to end before entering the corresponding chapter. You could also go to the book store's serial page to browse the author's updated serial chapters and choose the novel you wanted to read according to the chapter title or label. If you are interested in a particular novel, you can go to the official website of the novel or other online platforms to obtain the serial information of the novel in order to better understand the story and progress of the novel.