LDD tool comes along with some – sometimes very frustrating – limitations (sometimes, it’s a bit hard to assembly some parts in special angles or to rotate some parts). Get familiar with LDD building Interface, spend a couple of hours following some tutorials and experimenting the tool. If you feel a bit more adventurous or if you are simply more familiar with computers, LDD is really worth a try. You can limit yourself to the installation of the tool, download some building instructions from Planet GBC that you’ll open with LDD and simply follow the building instructions to construct your module. Don’t worry, modeling modules over a digital tool is not mandatory at all to build a GBC module. You might feel a bit of panic at this stage in case you do not consider yourself as an IT geek. An easy way to go from digital to reality. The beauty of the tool is that you can generate step-by-step building instructions, a bit like the ones you get when purchasing a standard Lego set. It is made available by Lego Group itself, and comes along with an exhaustive catalogue of bricks, allowing you to sketch Lego creations, from the easiest ones to the most complex ones. LDD is a great FREE Lego 3D designing tool. Interface of Lego® Digital Designer (LDD)

Lego digital building instructions