From this detailed guide, you can learn how to install Clásico Film Addon On Your Kodi.
The Clásico Film add-on for Kodi is a video add-on specializing in classic films, designed for those who enjoy movies from past decades. During our tests, we found a fairly extensive catalog that includes titles from the 1930s to the 2000s, making it an excellent alternative for revisiting great Spanish-language films.
this installation guide applies to all compatible devices including Amazon Firestick, Fire TV, Android & iOS, Mac, Windows, Android TV, Android Boxes, etc.
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How To Install Clásico Film Kodi Addon
- Open Kodi
- Be sure to have the Unknown Source box checked as Kodi requires this before installing 3rd party add-ons.
- HOME Screen > Add-ons > Settings button 
> Add-ons > Enable Unknown Sources.
- From your Home Click Settings (cog icon top left)
- Click File Manager
- Click None
-Type in the following EXACTLY
https://oscar3553.github.io/clasicofilm
- Click OK
- Click back on your remote/keyboard
- Click Add-ons
- Click Install from Zip File
- Click clasicofilm
- Click plugin.video.clasicofilm.zip.
- Wait for Add-On Enabled Notification
- Wait till you can see the message Add-on installed pops up. That's it! You can now find you addon from main menu > Add-ons, enjoy.