The models shown here fall into several categories: Training Bots, Accessories, and miscellaneous parts.
Instructions: At the bottom of each image is a link to download that LDD file. Depending on the capabilities of your web browser, you may need to left-click or right-click on that link to access the menu to open or save the file. If you try opening the file and it doesn't look like it worked, try the Save file option. If you save the file to your computer, make sure you note where the file is located so that you can then open it from that location in LDD.
Did you create your own robot design and want to add it here? If so, I'd be glad to post it on the website--providing that it is an actual robot and not just a collection of parts. Just bring the LDD file on a flash drive to the next RoboClub meeting.