How to donate to your Alliance?

In the alliance menu there is an option for Technology. In there you can donate resources and diamonds to increase the level of various alliance buffs to help everyone out.

You can use the alliance contribution points that you gain from this to buy items in the alliance shop. Including Rocks. These are useful to yourself but can also be donated to the alliance stone warehouse in the 'Building' option of the alliance menu. The alliance can then use them to build Alliance centers during Dooms Day events.