Yes - there's no doubt about it. A first solo in a glider is the best and quickest way to get going.
I managed to be towed straight into lift on my first. What to do? I decided to carry straight on until out of it, but it made for a funny shaped circuit. And on my second, they towed me up into snow!
On my first powered solo (7 hours, if someone is taking averages) ATC said "continue" when I was on approach. Did that mean continue on approach, or continue round the circuit again? It was not in my radio vocab, so I went round again.
It's all a very long time ago, but the first solo always sticks in your memory.