Jamestown Community College's Center for Continuing Education and the Downtown Jamestown Development Corp. will host a seminar to help businesses better use social media. The seminar will be held from 8 to 9:30 a.m. Tuesday at the DJDC conference room in the Dr. Lillian Vitanza Ney Renaissance Center, 119-121 W. Third St., Jamestown. The cost is $25 for DJDC members and $30 for non-members. The instructor will be Jean McGowan. A continental breakfast will be provided.