The dialogue in the first level is the introduction to the game. However, just in case, here is some guidance :
The simplest movement / the movement I use is A+D and Space, you have to find certain rocks (Pressing E) and bring it back to The Rock. By collecting every "rocks" in each level, go back to The Rock and press E, you can proceed to the next level.
Left clicking with your mouse can mine dirt and Right clicking with your mouse can place dirt. The amount of dirt you can place is displayed on the top left corner.
Thank you for your feedback.