There are 3 types of chatting. These types are text, video and voice.
Text chat is like texting on your mobile phone but the difference is your on a computer or a laptop. This is my least favorite chat option.
Have you used video chat before? I have and you should try it. All you need is a camera on your laptop. If you have a camera you click on more on your chat and it will say something like start a video chat with whoever is online in your chat list. Then click it and all you have to do is wait for them to answer. Next is the voice chat.
Voice chat is when you can only hear their voice. All you need is a microphone. You do the same steps with the video chat except you click on the phone underneath their name and wait for them to answer your incoming voice call.
Google chatting is a great thing to do when your bored. The only downside is that people might not be online when you are.