To further your knowledge and interest in landscaping and gardening, Greenwood Nursery provides this listing of free online gardening and landscaping courses.
BBC How to be a Gardener
Landscape Planning and Planting
Online Landscape Design Course
Small Space Garden Design
Introduction to Organic Gardening
Low Maintenance Gardening
Wildlife in the Lawn and Garden
Landscape Design Basics
Efficient Irrigation Systems
Professional Irrigation Courses (also in Spanish)
Note: While these courses are from reliable sites to the best of our knowledge, we take no responsibility for them nor offer any technical support for them.