To make friends, join a club. To join a club, find an activity fair.

Caitlin Squier-Roper, 45, recently discovered an intriguing club on Instagram: Philly Cooks a Book, a monthly meetup where locals prepare and share an assigned recipe from a specified cookbook.

She could’ve enrolled through the group’s social media and shown up to a meeting, dish in hand, not knowing a single soul.

So she held off […]