Sonoma Community Tennis at Hanna Center is offering a Tennis 4.0 program designed for children who are 4 years old but not yet 5. Lessons are 30 minutes long, with a maximum of three children per lesson, and the day and time vary. For members, the cost is $70 for one child, $40 each for two children, or $30 each for three children. Non-members pay an additional $10 per child per lesson, and families can contact Sonoma Community Tennis at 916-879-0212 or [email protected] for more information.