Please note that as of October 24, 2014, the Nokia Developer Wiki will no longer be accepting user contributions, including new entries, edits and comments, as we begin transitioning to our new home, in the Windows Phone Development Wiki. We plan to move over the majority of the existing entries. Thanks for all your past and future contributions.
Anyone(rather everyone) who knows genie will come to know what Guided tour is all about :-)
The article very nicely explains the need of a guided tour in case of application usability. The usability tips provided in the article will help to come up with more use-centric guided tours.