Some Hints to Get Started with RaspberryPi
If we had RaspPi in the '80's we would have been doing it!
RaspberryPi is the name of a type of Single Board Computers, which were developed in Great Britain.  
The First Step is to gather the software:
Which ever operating system you use some tools are needed.
-SD card formatter:
https://www.sdcard.org/downloads/formatter/
Raspberry Pi can do a lot of things including:

-desktop/mobile computer
-media controller
-robotics
-weather station
-web/security camera
-throw back video game console

For the most part Operating Systems for RaspPi are forms of LINUX.

The official operating system for Raspberry Pi is available here:
Projects:
Robotics:
https://www.explainingcomputers.com/rasp_pi_robotics.html
(I think he uses an old form of Python code, so watch out, other wise this is great, also if I am a 3 on the nerd scale Chris is a 10)
How to Make a Smart Security Camera with a Raspberry Pi Zero:
(the Pi zero case will work for this)
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Raspberry Pi Robotics((
this is based on the older Raspberry Pi Operating system using camera systems requires some work arounds
Media Center Using OSMC((
Retro Video Games
Using RetroPie
Raspberry Pi Car PC
Raspberry Pi Smart Mirror