The Outdoor Power Equipment Institute (OPEI) recently published a bi-lingual training manual for leaf blower users.
The 12-page brochure called "Leaf Blowers: A Guide to Safe & Courteous Use" can be downloaded after filling in a short tracking questionnaire. It includes instructions in both English and Spanish. The brochure is in Acrobat Reader (PDF) format.
http://www.opei.org/guide/leafblower/register01.asp