Arts Collaborative Medford is hosting its first workshop, a certification course on repairing historic Bostonian brownstones. The workshop leader, Bob Tomolillo, has decades of experience as a brownstone repair specialist and a printmaker. In this course, you will learn how to approach unusual brownstone repairs; learn mold making and casting techniques; interface with builders and companies in the area; understand the relevance of Boston’s historic district; enroll and receive a brownstone masonry repair guide; and receive a Boston Brownstone Institute Certificate. Cost is $215. Register through the ACM website.