Press the unit you want to make move with (Warning:you cant "unchoose" it, so think carefully!)
After it you can see the health of this unit on right screen(When units are spawned, they have invincibility for 1 turn)
Then press the green tiles to move
The green numbers on top of the screen are move points
You can only do actions when these numbers are above zero
When move points hit zero or you will press the skip button, the turn will change