This is what you have all probably been wanting to hear, so I will get this out of the way first.

What you do first is download the latest U-play launcher off of the U-play website. Once that is done downloading and installing, you then go on your steam copy of From Dust, click cd-key, copy that to clipboard. You then go back to the U-play launcher and activate prouduct. This will require a key, the key which you should have just got off steam. Copy and paste the steam key in, activate the prouduct and launch. Note, it may be a liitle bit glitchy (not properly using the game curser and menu) when it first starts up and the first screenshot you take of the game might crash it. Once the first startup is done, there should be no problems however.

This is the basic tutorial mission, so this will be quick. Watch the intro and then hold down left-mouse button when it asks you to. This will create your charecter. Have a look around the map until the game asks you to help the men croos a small river. Once it does this, you will gain the ability to move earth/sand as well as water (and eventually lava). Simply drag the curser/breath onto sand, hold left click and then head back to the men and then hold right mouse button to deposit the sand in the water to start making a land bridge. This may take 2-5 loads to complete. Then wait until the men ask you to go with them through the passage way and so end the level.