starting to learn FPGAs

Hi,

Altera has OS support doc for Quartus a d related Tools.

https://www.altera.com/design/guidance/software/os-support

You'll  notice that e.g. new Ubuntu versions aren't supported by Questa simulator, thus you'd go for Ubuntu 20.04 if you prefer Ubuntu. You can use latest Quartus Prime Lite 25.1 for Cyclone 10 LP and MAX 10 devices respectively 26.1 Prime Pro 26.1 for Agilex 3 or 5. It has a free license for these devices.

Choice of FPGA series and development board depends much on your intended FPGA application, signal speed, logic complexity, required interfaces.

Regards Frank