Documentation:
Skype features overview
http://www.skype.com/download/features/
Skype has designed lots of clever features to contacting people even easier. From calling your friends and family, to meeting new people and managing your calls.
 

 

 
Useful Links:

 

 
Training:
How To Increase Your Skype Call Quality
http://www.gizmodo.com/gadgets/wireless/how-to-...
The guys at Labrats have a video up on how to increase the quality of your Skype calls.
 
Getting started with Skypecasts
http://www.skype.com/help/guides/skypecasts.html
 
Free Audio Conferencing For Up To 100 Participants: Skypecasting For Beginners - How To Do It
http://www.masternewmedia.org/online_collaborat...
Skype defines Skypecasts as: “large, hosted conference calls on Skype with groups of up to 100 people participating from anywhere in the world.” And this is indeed what Skypecasts are: mega audio conferences with one important characteristic… all the costs are on Skype.