NOTE: As of version 2.1, Organize Series now requires WordPress 2.8 - for earlier versions of WordPress, use version 2.0.8 of Organize Series
../wp-content/plugins/. The orgSeries folder can be named whatever you want but the default is "organize-series". The final structure would be something like this: ../wp-content/plugins/organize-series/--and all the orgSeries plugin files/folders--You can do the above or just use the new plugin install integrated in WordPress.
If you are upgrading from Organize Series 2.0 or above you can follow the same steps as above however make sure you revisit the Organize Series Settings page. There are some new fields that you'll need to populate. There are two ways of going about doing this:
Fill in or modify the blank fields on the options page
Specifically:
Click the "Reset Options to Default" button
This will populate all the fields with the default settings.
IMPORTANT This will also replace any customizations you have already set - so if you choose this option make sure you copy your custom settings FIRST so you can reapply them after.
If you customize the included series.php file (for series archive pages) and seriestoc.php file (for Series Table of Contents Page) to fit your site theme better make sure you copy those two files over to your theme directory so future upgrades of Organize Series won't overwrite your customizations.
That's it! You might want to read through the Series Options page (in the "settings" menu of WP 2.5 or "options" in earlier WP versions) and the Manage->Series Page. You'll also notice that your "write/edit" posts page now has a handy dandy series box on it for adding your posts to a series (and creating new series on the fly).
For support please visit the support forums. You can also get support from the WordPress Help Center. This is a service I have partnered with and when you pay for support from them I receive a commission so it's a way of supporting the work I do. When contacting them let them know my affiliate code which is 14322.




