Being an English teacher I have a lot of useful material for this group. I will be posting everyday dialogues here and you may ask me any questions. Hope, it will be helpful.
So, here is the first one:
I got a new computer
Bill: I got a new computer yesterday.
Robert: You got a new computer?
Bill: Yes, a new notebook computer.
Robert: Why didn't you get a desktop computer?
Bill: The notebook is light, and has a battery, so I can use it anywhere. I can use it on the train or the bus.
Robert: Isn't the keyboard too small to use?
Bill: It's compact, but I'll get used to it.
Robert: I think large keyboards are easier to use than small ones. Also, desktop computers are more powerful than notebooks.
Bill: That's true, but my notebook computer is powerful enough for me.
Robert: Aren't notebooks more expensive than desktop computers?
Bill: Yes, desktop computers are usually less expensive, but notebook computers are portable. I can use my notebook in any room, and when I'm done, I can put it away. You can't put away a desktop computer .
Robert: That's true, but my desktop computer doesn't take too much space. It's an iMac.
Bill: That's a cool computer. I bet my Windows notebook was cheaper than your iMac
Robert: You get what you pay for.
You can also say "laptop" (notebook) and just "desktop"