This interactive software includes lessons on general safety, climbing and rigging, with animated knots and interactive exercises. Users can use these CDs to prepare for the arborist certification exam and upgrade their knowledge and skills. The lessons are designed for adult learners who cannot attend formal classes and nontraditional learners who respond best to visual, auditory and hands-on teaching methods. System requirements: 800 MHz Pentium® III or better; 256 MB of RAM; Windows® 2000 or XP, 24X CD-ROM or better; 1024 X 768 display at 16-bit color.