From time to time I cannot get my lines to double space correctly in WordPress. It sometimes happens around quotes or around the photographs. When I did the post on embedding YouTube links, everything got really scrunched together.
WordPress does not like blank lines. If you try spacing down to create blanks, it will remove them from the post.
To get in some extra lines, I switch my screen from “Visual” to “HTML” (upper corner above the text box).
© 2012 dogear6 llc
I insert a command of <P> to get an extra blank line. I usually have to experiment. Sometimes it works at the beginning of the line that begins the second paragraph; sometimes it’s better at the end of the first paragraph. Sometimes I do the in-between blank line and sometimes I do all three. Yes, I do. At some point, it will work.
If it doesn’t, try the line break command instead in the same way – <BR>.
© 2012 dogear6 llc
Here are the two resources I use for trying to figure out HTML:
Formatting Text – Basic HTML Tags
I’m not interested in doing anything fancy, but it is nice to be able to make small tweaks to improve the appearance of a post. It’s not hard to do HTML and someday I’ll take a class to learn it better. In the meantime though, this is a small way to help improve the appearance of your blog.
A Daily Life 
February 25, 2012 at 10:56 pm
Hmmm…I will give this a try. I often have trouble getting a new line when I have photo’s in the post. This may solve the problem. Thanks for the tip.
February 26, 2012 at 12:37 am
You’re welcome!
February 28, 2012 at 11:18 am
The reason it doesn’t always work is that you’re not putting a closing tag in. (A closing tag is the same as the P in angle brackets but there’s a forward slash in front of the P.) You should put a closing tag at the end of each paragraph, then a new opening tag for the new paragraph, etc.
This is from a better resource:
http://www.w3schools.com/tags/tag_p.asp
By the way, if you go to your dashboard, look at the menu on the left, scroll down til you come to ‘Settings’ and, if it’s not already open, click on it. Then click on ‘Writing’. On the Writing Settings page, near the top, you’ll see two options for Formatting. If you check the second one ‘WordPress should correct invalidly nested XHTML automatically’ then if the program is being glitchy or you write bad code, this should automatically correct it.