This is a course that was developed for vineyards but it works for any crop.
http://www.vineyardteam.org/resources/onlinecontinuingeducation.php
Continuing Education Credits
Online Courses are now available for obtaining continuing education (CE) credits approved by the Department of Pesticide Regulations (DPR).
Effective Vineyard Spraying & Drift Management
This one-hour online course is self guided, and can be viewed from your desktop computer, laptop or tablet. You must turn up your volume to hear the presentations. There will be a quiz at the end of the one hour course. Participants must score a 70% or greater on the quiz. To obtain your verification of attendance via email, you must register at the link below and provide payment of $20 for 1.0 hours of DPR CE credits in the "other" category. If you are not interested in obtaining CE credits, you may simply view the presentation for free, and skip the quiz. We hope you find it informative and educational either way.
