Forestry machines are essentially four degree of freedom electro-hydwulic telemanipulators equipped with specialised end efiectors for harvesting trees. In this gaper, we describe forestry telemanipulation and then review the development of a computer-based training aid based on graphical simulation. To the best of our knowledge, our work here represents the first concentrated attempt at developing Q system intended to become an integral part of forestry niaclaiiie operator training.