Hmm... I played online poker as a kid, between 16 to 18 for negligleble amounts. When I came into the casino, I was nervous but my math mind took over. I did well enough to get in the money of sit 'n go tables.

I got awkward in the beginning, by unintentionally straddle betting and violating all kinds of other table rules that I didn't know. But that irons out quite quickly.

It's a fun experience to feel awkward and realize you're still going to go away with the price.