If you own a computer (desktop or laptop), you can make free phone calls to anybody in the world who also has a computer.
If you don't own a computer, you can use any Internet cafe that has Skype installed. The only thing with an Internet cafe is that your call may not be so private, since people can hear you.
In addition to a computer, you would need a headset.
You can purchase a headset for as little as $5. See http://www.newegg.com/Product/ProductLi ... rder=PRICE
Free phone calls can be done using Skype.
Skype is a software that emulates a phone. Such programs are termed Voice over IP (VoIP). Basically, it's a computer-to-computer call.
Here is how...
1. Download Skype from http://www.skype.com/
2. Install it.
3. Tell the people you want to call to also install skype.
4. You add your friends to your list, and they add you to theirs.
5. Now watch a video of how to make a Skype call.
As the video shows, not only can you talk to people, you can also see them. For that, you need to have a webcam on your computer. The price of Web cams start from about $10. See http://www.newegg.com/Product/ProductLi ... rder=PRICE
So what are you waiting for? With used laptops selling for as little as $150 these days, there's no reason not to own one.