There are some simple Drupal modules that help with login redirection (especially Login Destination), but I often need more advanced conditions applied to redirects, so I like being able to do the redirect inside a custom module. You can also do something similar with Rules, but if the site you're working on doesn't have Rules enabled, all you need to do is:

1. Implement hook_user_login().
2. Override $_GET['destination'].

The following example shows how to redirect a user logging in from the 'example' page to the home page (Drupal uses <front> to signify the home page):