Hi all!! I need some help - I am looking for a very brief video introduction lightning experience for my end users (Sales cloud). I've looked through some of the resources Salesforce offers and none are really basic enough. I am just looking for something (maybe a good article and quick video) that explains what lightning is and what it looks like. 

More in depth training and sessions will be provided - but as a first intro, i really want to just show users what it is and how it looks. 

Any ideas/ recommendations? Thanks everyone!