Somewhere between seeing something for the first time and knowing everything about it lies a wonderful time of figuring things out, and gaining fluency.
Not just technical things. I love finding myself getting lost in Central Park, even though I've been down every path many times. The occasional feeling of 'oh-oh, where the **** am I' is a true joy in my life.
GPS, location services and maps make it hard to get lost these days. The implication is that it's a bad thing. But I think we all miss that tiny rush of adrenalin when we suddenly realize we don't know where we are.
The joy of discovery and becoming good at something at one's own pace, without the prompting of bloggers or sluggish self-aggrandizement of youtubers, is becoming a lost art. As is doing anything without posing for a selfie.
I hope you encounter something unknown and enjoy every second of grokking it.