You go down to your local rink (I appreciate not all areas have an ice rink let alone a curling rink) and sign up for some lessons.
You can then usually join a (social/hobby) team.
I used to play - about 10 years ago. I gave up when I fell pregnant but I still have my curling shoes!
It's fun.
I was pretty rubbish so in a team of 4 I played the first two stones (guard stones) which were then usually knocked out of play. I did win my clubs double tournament one year though! 🏆