The game loads with no instructions, so you could well be stuck already as you start the game. It is actually a good Introduction into what the game is all about, solving small puzzles that are often part of a bigger puzzle and getting your character, Ro (and her child) to the exit of the level.
Okay the first puzzle is pretty easy, but if you have never seen the game before you may be a bit clueless as to what to do!
Well you see the object to the right of the screen with four spokes coming out of it, press that and make it spin around so that the object rotates and the path to the exit at the top of building is complete. Then simply tap the square at the top and Ro will walk there completing this Introduction level.
Once the sequence has completed, tap the star to move onto the next level.