Skype is a “voice over Internet protocol” (VoIP) application, available in both free and paid versions for Mac OS X and Windows. In addition to audio communication and related services (voicemail, call forwarding), Skype provides instant messaging, video conferencing and SMS text messaging. In general, Skype is used to communicate with friends and family or hold business conferences.
Resources required: 
The requirements are: • a PC or laptop • Internet connection (preferably broadband) • speakers and a microphone • a webcam for video calls Skype supports Windows, Mac and Linux operating systems. Technical requirements are listed here:
Main services are free, calls to landline and mobile phones as well as business and premium packages are charged
Setup and configuration: 
In order to get started the user needs to download and install the application and create an account to access the services. After signing in, all basic configuration options can be accessed at Tools->Options menu. These include general settings connected
Styling options are limited. Personalisation is largely restricted to customising the avatar and the sounds and there is a choice between two styles of the programme window. From a visual perspective, Skype has two layouts: default and compact views. It i
Navigation and operation: 
Basic actions of Skype such as finding and adding contacts, making calls and instant messaging are easy and intuitive. Paid services e.g. call forwarding and voicemail demand slightly more attention but should pose no problems to intermediate user. Menus
How to use it: 
Main actions involve working with the contact list. Depending on the setup clicking or double clicking on the contact initiates a call or messaging.
Examples of use: 
Examples of a few approaches how Skype can be utilised in education: • Cultural exchange - introduce new ways of seeing the world with a cultural exchange with another classroom anywhere in the world. • Language skills - bring language to life with real-life conversations where students can practice a new language with a class of native speakers. • Discovery – classes can connect online and give clues to help each guess the other's location or introducing students to a classroom in the location of a book they are reading or a subject they are studying.
Other issues: 
ePals, - one of the best and most established Internet resources for connecting educators wanting to collaborate using Skype.