A good way to always be learning about crypto currencies is to stay informed of the latest developments of your favorite crypto currencies in general and reading about how the tech behind it works.
To get a more general understanding of crypto currencies, there are certain books out there that will give you a basic insight but a lot of people don't have time to read, so I would also suggest to go the youtube way instead, there are tons of legit cryptocurrency education channels that don't try to spoonfeed you with their current shill coin in every video, you just have to look around and you'll find tons of resources.