Ju-Jitsu Dojo of Columbia will hold a self-defense seminar for women ages 14 and older from 1 p.m. to 3 p.m. Saturday at 9515 Gerwig Lane, Suite 103. Class includes learning effective striking methods, how to escape from various holds, self-defense on the ground and how deal with an armed assailant.

Cost is $20. To register and more information, call 410-309-1988 or go to combatju-jitsu.com.