the bracketed part in the third paragraph is probably not necessary, and there is also probably a better way to describe it, but as long as I was writing...
current:
Customize your journal using the Select Journal Style page. Using this page you can edit your journal's titles and change its theme. Search for a theme or layout by typing all or part of its name, keyword, color, or the designer's name into the Search box located just below the 2. Select a New Theme section heading. You may also pick your theme from one of a number of categories listed down the side of the page or by clicking on the links below the theme previews.
proposed rewording:
You can customize your journal using the Select Journal Style page. Using this page, you can edit your journal's titles and change its theme.
You can search for a theme or layout by typing all or part of its name, keyword, color, or the designer's name into the Search box located just below the Select a New Theme section heading. You can also browse themes by using the categories listed down the side of the page or by clicking on the links for the name of a layout or the theme's designer below the theme previews.
[You can view a preview of your journal's recent entries page in a particular style by clicking the Preview link in the top right corner of the theme preview thumbnail.] Selecting Apply Theme below the theme preview will change your journal's theme.