C.M.
Hello S.,
One good thing about Skype is that you can call and see people at the same time for free. Now, regarding your question about equipments....
Any camera (for pc) would actually work on it. You have a lot of choices with those and can get them almost just anywhere. Just make sure though that the camera you will buy would have a built in microphone. If it doesn't have one, you will also need to buy a pc headset (with microphone), and as soon as you have all of these, you can start skyping by going to skype.com and following their step by step instructions on how to download it to your pc.
Good luck and happy skyping..... Hope this helps........
C.