Vamos en español! 
No, es muy facil instalar un SO en una tarjeta SD. La comunidad ha preparado varias imagenes ( incluso de Ubuntu). Algunos usuarios, como @Rex son realmente muy capaces, y les encanta el café 
Vas a necesitar el programa “imager”, de Raspberry PI (yo lo uso en Linux), y basicamente le indicas que placa tenes (CM4, CM5, etc), que archivo de imagen vas a usar (la descargas previamente) y en que SD la queres guardar…y listo!
Podés tener varias tarjetas con distintas configuraciones. Una maravilla!
Saludos.
No, installing an OS on an SD card is very easy. The community has prepared several images (even Ubuntu). Some users, like @Rex, are really skilled — and they love their coffee
You’re going to need the Raspberry Pi Imager program (I use it on Linux), and basically you just tell it which board you have (CM4, CM5, etc.), which image file you want to use (you download it beforehand), and which SD card you want to write it to… and that’s it!
You can have several cards with different configurations. It’s wonderful!
Regards.