sudomod

Hello community! some time ago I have my raspberry pi 3 but I give it a very basic use with noobs (raspbian) but now that I have more free time I would like to install other operating systems in its most recent versions (raspbian, kodi and retropie) I know that kodi and raspbian they can install with noobs but I do not know how to add retropie and I do not know if it is possible. epero can help me! and excuse me if there is already a tutorial of this but I did not find it.
also if someone knows a tutorial how to configure kodi would help me a lot. Thank you!