The simplest way to do that would be to use the More tag on all posts except the most recent:
http://codex.ww.wp.xz.cn/Customizing_the_Read_More
If you’re comfortable editing PHP code, another route would be to edit your content.php theme file to modify the existing loop structure.
I did a quick search and found a few ideas to help point you in the right direction:
http://ww.wp.xz.cn/support/topic/all-posts-excerpt-except-the-first?replies=3
http://ww.wp.xz.cn/support/topic/full-article-for-first-post-excerpts-for-the-rest?replies=7
http://stackoverflow.com/questions/19230265/wordpress-first-post-in-full-others-show-excerpts
These relate to different themes, but if you analyze them you might be able to apply similar techniques to Forever. Let me know how it goes!
I don’t understand how to use the codex.wordpress to get it to do all posts except the first without going into every single blog post individually and adding the ‘more’ code. Is this something I can put into my child’s theme?
Thanks!
Yes, you can do this with a child theme.
In a nutshell, what you’d need to do is:
1. Loop through all posts and grab the latest one. Display the full content for this post (so you’d use “the_content()” in your loop).
2. Create a separate loop that skips over the latest post and grabs all remaining posts. For these, you would display excerpts using “the_excerpt()” in your loop).