Welcome to the forum! Happy to help out with the basics.
Serviio is used to stream your personal media to your TV. While it has some plug-ins for some online sources, that's not its primary role. If you have DVDs and Blu Ray discs that you would like to store on your computer and play through the TV, that's what Serviio is for.
Ripping your discs to the computer is actually very simple. The easiest to use program is called MakeMKV (
www.makemkv.com), and will make a 1:1 copy of your media after removing the copy protection that would otherwise block it from playing. MakeMKV can rip DVDs as well as all forms of Blu Ray discs, including 4K/UHD discs. However, to rip anything more than DVDs requires a supported BD optical drive for your computer. Most computers have a standard DVD drive, which is fine for the DVD discs. But they can't read a BD disc. And only a handful of BD optical drives are capable of ripping a 4K BD disc.
Save your ripped media to a specific folder on your computer. For TV series, it's best to put each series within its own folder. For example (assuming Windows OS for the moment), whatever drive you are going to store your media on, first make a media folder, such as E:\Media. WIthin that folder you might have a Movies folder (E:\Media\Movies), and a TV folder (E:\Media\TV). Now within the TV folder, make a folder for each TV series (E:\Media\TV\The Twilight Zone (1952)). Notice I put the year of the series in the folder name. This really helps if the particular series had multiple versions. Rip your media into the proper folder.
Once you have your media set up (and you can always add more to those folders at a later time), you can set up Serviio. After installation, you use the Serviio console to tell Serviio where your media is located. Serviio will detect your TV and attempt to assign the best profile for it to use, but sometimes you have to assign a different profile to a player. It's quite simple to do in the console as well.
Let us know if this is enough to get you started, and if you have any additional questions.