Videos are good, but there's nothing like having someone show you.
You may have to ask more than one person to show you. I did because some people that can throw the heck out of a cast net are unable to tell you what they are doing. They don't think about it, they just do it.
The 'spin' part was what I was missing. I was told to throw it like a Frisbee. It's nothing like I throw a Frisbee.:nono: After the third person showed me I finally got it. (kinda)
BTW, all three people threw it a different way but I learned something from all of them.