The raspberry pi is mini computer running linux distribution. This mini computer is a good way to learn linux, to code, to develop small project. The community around it is huge and propose lot of project to turn you Raspberry Pi into a media center, emulation platform, ad blocker, etc… One other advantage is that it is very small and cheep. To start properly using your raspberry Pi, I recommend you to take some extra stuff as a SD card for the OS, a Micro USB cable to power it and case to protect it. For around 50 € you can have a working kit. But today there is lot of models to help you to pic the right one, bellow you will find a table containing all the models comparing computing power. If you want more information you can have a look to the Rapsberry Pi website www.raspberrypi.org
| Name | Cores | Frequency | Ram |
| Raspberry Pi B | 1 | 0.7 GHz | 512 MB |
| Rapsberry Pi A+ | 1 | 0.7 GHz | 256 MB |
| Raspberry Pi 2 | 4 | 0.9 GHz | 1024 MB |
| Raspberry Pi Zero | 1 | 1 GHz | 512 MB |
| Raspberry Pi 3 | 4 | 1.2 GHz | 1024 MB |
| Raspberry Pi 3 B+ | 4 | 1.4 GHz | 1024 MB |
| Raspberry Pi 3 A+ | 4 | 1.4 GHz | 512 MB |