A free small-business assistance seminar on marketing basics will be held from 8 to 10 a.m. Thursday at City Hall council chambers. Topics to be discussed include target markets, effective promotional vehicles, sources of free publicity and developing a marketing plan. Food will be served. The seminar is sponsored by the city's economic development department and the Orange County Small Business Development Center. City Hall is at 32400 Paseo Adelanto. Information: (949) 443-6315.