One of the tips in this video is one I'd like to tell a little story about. Recently, a friend of mine who has a rather successful small business, wanted to have a marketing video made which showed him working, his premises, and some talking-head shots where he would discuss what the company does and who it's for. All in all, it wasn't a big ask, but he did want some good production value. I was too busy to take it on at the time and one of the feelers he sent out came back with a recommendation for a fantastic, local video production company.
The day of the shoot went smoothly and although my friend hadn't seen the results, he was happy enough. Then, the weeks ticked by and no videos were delivered. After a few months of arguing, my friend (rightfully) demanded his money back, the videographer lied, and then said it was impossible for him to give the files as he'd already deleted them. Now, we all know you don't delete the files after a shoot, even if you successfully delivered them. What I believe happened is that he didn't back-up or store the files and then simply didn't know what to do when he lost them.
So, take the tip about storage seriously: cloud storage is cheap, but mistakes that large are not.