Tutorial 1: On login redirect to the user's account page
The first short tutorial will show, how workflow-ng can be used, to configure a simple page redirection after a user has logged in.
As an alternative, one can just import the ready configuration from here.
1. Create a new configuration
First we have to start a new configuration. For this go into the workflow-ng admin center and click on the tab "Add new configuration". Select the event "User has logged in", set the label "On login redirect to account page" and click "Submit".
Now we have created a new configuration, which is still empty. Every conditions and actions that we add to this configuration, will be evaluated on the event "User has logged in".
2. Create the redirection action
To do so, click on the "Add an action" link, select the action "Page redirect" and click submit. The "Page redirect" action makes use of token replacements, which allow us to place the user's id in the redirect path.
So call the action "Redirect to the users account page" and set the path "user/[account:uid]", without the "". Then activate the checkbox "Force redirecting to the given path, even if a destination paramter is given" - which is necessary, because drupal sets always a destination parameter to the current page, if a user logs in. So, that our redirection applies, we need to activate this. Check the option, and submit the form.
That's all. Just log out and log in again - you'll be redirected... :)

The URL shown in the example...
... is useful just in the case the web site is using clear paths, otherwise it would be better to use the generic URL, and insert http://example.com/?q=user/[account:uid].
This is should be pointed out for who didn't activate the clear URLs, like my friend.
-- Kiam