How to write a Post within a Page?

Hey I was just wondering if anybody knows how to write a post within a page. For example, I have a main page and then I have 2 pages but the only way I can edit the pages would be to edit the whole thing. What I want to do is to post updated blogs like on the main page.

For example, I have a page called pictures. I want to be able to just to constantly post pictures like I do on my main page rather than editing the Pictures page every time I want to add a picture. Hopefully this makes sense.

If you need a visual of what I’m talking about please visit my site. wwww.domo-world.com
I want the Pictures page to be similiar to the Home page, where I can just add posts rather than editing one gigantic page.

Thanks
– domo