How to bring back bees?

Bringing Bees back is our mission. But how can you help?
If you want to help bees you need to know a couple of things beforehand. You will need flowers and pollen, nest sites, natural predators and water recources.
It's important for bees to a wide diversity of flowers to feed from.
For homes you can buy artificial bee homes or make your own. Keep in mind that the materials you use are as natural as possible.
Try to avoid any chemicals or artificial products when creating a home and environment for the bees.
Last but not least: as important as water is for human, it's important for bees too. You might not expect it since they feed from flowers a lot but they also need water. It would be wonderfull if it's possible to have a pond for the bees.