You can download LEGO® Digital Designer ™ (LDD) by clicking the link below:
LDD is a very easy tool to use from the author's point of view. The "Help" documentation in LDD gives you a very good foundation to start building your own templates. 

The best part of using LDD can be used to create exportable simulator models, as well as a printable bill of materials and building instructions for creating a physical robot.

                                                                                                                    LEGO Digital Designer

                                                                                     Create printable statements using LDD build guide mode

                                                                               Bill of Materials created from LEGO Digital Designer