I have hundreds of movies, TV shows and music that I have bought over the years. They all reside on my Plex Media Server. Just like books, I tend to buy these works and watch them once in awhile, instead of relying on “streaming” services like Netflix where content isn’t always available forever.
Raspberry Pi is a single board computer (SBC) which have capabilities to work like a general Desktop/Laptop computer can do. Plus it can be use to play with a lot of peripherals like LED, sensors, motors, etc to make DIY projects using on board GPIO Pins. Overall you will have a great experience working with a Pi