This is my second Tips and Tricks for Archiviz with Blender.
Here we will see how to make roof tiling that is not perfectly aligned and with some randomness in the color of the tiles.
You can use this to model a lot of other things that look much better if not aligned.
At the end of the video, I explain how to link the Object Data to all the tiles, so that they are all Linked Duplicates. One important use for that is to be able to move the origin of all the tiles. Let's say you model a forest with that technic, you will set the origin of the trees on their roots, so that when you scale and rotate them randomly with Individual Centers as pivot, the trees will always be on the ground.