How to show all posts and scroll between them

Hey Jaeeun,

I think what you’re asking for is usually referred to as “infinite scroll”. The home page of a site will usually load with a few posts, then as the user scrolls to the bottom, another batch of posts is loaded, and so on. This technique is being built into several themes these days, but there are various ways you can add it to an existing theme. If you know how to develop themes, here’s one tutorial I found that walks you through the process step-by-step:

Add Infinite Scroll to a WordPress Theme

Or, you can take the easier route and use a WordPress plugin. Here’s the first one I found:

Infinite-Scroll

FWIW, I haven’t tried either, so user beware. 🙂 Hope that helps!