It's now a month since 3's fabulous new Skype-certified X-Series phones went on sale, just in time for the festive rush. (Christmas, remember that? Seems like last year already.)

An X-Series phone is for life, not just for Christmas, so Skype has launched a comprehensive guide to using it. No Skype on 3 question, Frequently Asked or otherwise, remains unanswered.

The guide starts with the basics (Q: What is Skype on 3? A: A new service that Skype and 3 are launching that allows you to access Skype from your 3 X-Series mobile phone") to the fiendish. For example, there are full instructions for opening a Skype account via the phone – because not every X-Series user already has a Skype account, or even a computer with broadband access. You'll also find advice on calling contacts in your address book, diverting calls to your 3 voicemail service, and much more.

There's also a sneak peek at features that'll soon be appearing on Skype on 3, including Skype chats, which are expected to be added to the platform later this year. Also pencilled in for a 2007 appearance is a tool for revealing who is calling you over Skype.

To sign up for the service and find out what else the X-Series phones can do, click the 'Get Skype on 3' button on Skype's guide to the 3 service. This takes you straight to 3's X-Series website, where you can view a demo and find out even more.