About installing Unity - VapaaLassi/TAMKUnity2024 GitHub Wiki

Few notes:

The unity download page: https://unity.com/download will make you download Unity Hub. Install the latest recommended version from the "Installs"-tab in Unity Hub, currently it's likely going to be the 2022 LTS release.

Install Visual Studio (any version that the editor installation recommends)

That could help you a lot while programming.