I'd look into Plex. It's similar to Kodi but much more user friendly to use and to set up in my opinion. It's free, but you can also pay for a "Plex Pass" to get some extra features. For most people (especially those new to this), the free version will be more than adequate. There are a bunch of guides/videos on how to set it up, and reddit.com/r/plex is a great resource as well. I'm very familiar with it too so if you have any questions about it/setting it up/using it, etc. then feel free to PM me!
Edit: Just adding an article link to compare Plex and Kodi.
http://lifehacker.com/home-theater-software-showdown-kodi-vs-plex-1746501974