How do I install eclipse for the first time?

Could you please explain to me the step-by-step process of installing Eclipse for the very first time? I'm completely new to this and want to make sure I do it correctly. Do I need to download any prerequisites before I begin? What operating systems does Eclipse support? Additionally, could you walk me through the installation wizard and highlight any important settings I should be aware of during the setup process? Thank you in advance for your help.