Carloop itself plugs into one of these microprocessors (you need to get Carloop with one of these unless you already have one):
- Particle Photon (with WiFi),
- Particle Electron (with Cellular) or
- Redbear Duo (with WiFi & Bluetooth Low Energy).
(they all have USB as well)
Usually these devices can communicate over the internet with all sorts of other devices such as a Laptop, smartphone, tablet, etc.
However, you have to write your own firmware for the microprocessor (unless you stick to the simple examples provided by Carloop). The beauty of Carloop is that it will do almost anything on a car's CANbus; you just have to write the firmware to do it. When it comes to writing firmware, a proper workstation is best with full keyboard and decent screen.
The development tools to write firmware are available for most operating systems. The Particle development tools are available for Windows, Mac OS or Lunix (usually Ubuntu). I think (but have not confirmed) that the Redbear development tools work on all the same platforms (Redbear is based on Particle).
For full details, check out particle.io and redbear.cc
You should be fine!