Set the number of posts on each blog page

For the first time, it can be a little difficult for a blogger or blogging activity to set the number of posts on each blog page, but in reality very easily.
To set the number of posts per page on the blog, you must follow two steps: set the number of posts on the homepage or the home page and set the number of posts on the next page or on the next page.

Why should we set the number of posts displayed on each blog page? first of all, so that our blog looks more neat and orderly, then, so that we can maximize the loading of the blog page in access, because more and more messages posted in each page of blog will make our blog progressively heavier during the loading process.
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