One for all or All for one

When starting your book, decide is the story going to be about one character throughout the book, or multiple characters that can tie a story together. I prefer multiple stories; I feel you have more freedom to extend a storyline and take the characters into many different directions. It is important to make sure your storylines make sense and you do not lose your readers in the process. Each story should somehow be linked to one another so they will be able to come together by the end of the book.