Estonian – Estonian Sign Language dictionary: http://www.eki.ee/dict/viipekeel/
Spreadthesign – a free online dictionary of different national sign languages from all over the world: http://www.spreadthesign.com/
A dictionary of International Signing: https://rv-sonastik.ead.ee/
Signs of sexual education: http://www.ekno.ee/seksuaaltervise-oppematerjalid-viiped/