Families in Central Texas are invited to participate in a free swim safety lesson. The lesson is 30 minutes long and is part of the "World's Largest Swimming Lesson" event. The event is scheduled to take place on Thursday, although specific details about the location and timing are not provided here.

For more information, readers can refer to the source, which may have additional details about the event, including where and when to attend the free swim safety lesson in the West Lake Hills area.