Upload the contents of the zip file to your
/wp-content/themes/ directory. Once the files are uploaded, you can click the Change Theme button from the Dashboard or expand the Appearance section in the sidebar and click on Themes. Then click Activate underneath the One image and description.

It will look like this.
Once the theme is installed, you can click over to Museum One Options. This page allows you to add customization options to style your site. Some items (like design elements) are required. Some items (like social networking links) are not. The required options are marked with select one under the section heading (color palette, sidebar, and background sections, specifically). After you've made your selections, click the Save Changes button. If you want to start over, you can click the Reset button.
One supports customized menus. By default, all of your pages will display in the header under the tagline. If you would like to customize the links that appear or the order that they appear in, you can do so by clicking the Menus link under Appearance (WordPress 3.0 and higher). At this time, One does not support dropdown menus, so if you have multi-level menus, you will need to make them top-level only (no submenus). When you create your first menu, you will need to name it Header for the customized menu to show up on the site.
That's it!
At this point you can start using your new theme. By purchasing a Museum Theme from Arcane Palette, you can receive support via our Support Forum or report any bugs on our bug tracking system. Feel free to use the support forum any time you have any questions.
Thanks again for purchasing One. Happy blogging!
** 02-22-2012 **
Version 1.0.5
===============
- removed lazy loading plugin (themes shouldn't be adding plugins)
- added PHPDoc-style comments to functions.php
- added update notifier
- removed header logo
- removed dashboard widget
** 11-07-2011 **
Version 1.0.4
===============
- changed name
- removed whitespaces from header.php, style.css, footer.php
- added generator to header (for troubleshooting)
- updated readme with new support forum link and link to bug tracker
- added changelog to readme
** 8-12-2010 **
Version 1.0.3
===============
- removed bitly
- fixed and updated footer link credit
- added new twitter tweet button
** 6-28-2010 **
Version 1.0.2
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- added changelog, license and made fully GPL compliant
** 6-27-2010 **
Version 1.0.1
===============
- updated footer credit link to include link to museumthemes.com
** 6-25-2010 **
Version 1.0
===============