Press the s button to start the game.When the move icon is on 1 then you will be able to move. right arrow to go right, left arrow to go left and space to jump. And if u want press the r button to rotate (there is no purpose for this button so you don't need to use it). When you want to read the sprite's profile go to the sprite and then click the green flag and then the cat will say basic info about the sprite.
And i had a huge help with @francofantino so check out his games and animations because he has some awesome stuff out.