If you have ever been interested in 3D and how to create beautiful landscape scenes, then I have always recommended the Vue product line. It has been my favorite for many years due to its render quality, ease of use, and low entry price.
I just noticed today that they are now offering a free personal learning edition, and also a free edition called Vue Pioneer. Now remember both of these have limitations, so read carefully and don’t expect them to be a full version. However, this is a good way to get started and decide if the investment is right.
http://www.cornucopia3d.com/products/vue/vue_7_pioneer/