Dance away your cares at the Medford Public Library as Dance Caliente presents a fun and lively lesson on the waltz and salsa line dancing. Dancers of all levels and ages are invited to attend. Founded in 1998 by Eileen Herman-Haase and Raul Nieves, Dance Caliente brings a contagious enthusiasm to their instruction. Register through the library’s online calendar.  Dance Caliente also will offer classes at the library this spring on the waltz (April 24) and salsa (May 29).