Thanks for the feedback, BeregAlto!
1) In which level you had trouble? Also you have trouble understanding the objectives or something else like how to move/push tiles? The tutorial in level 1 didn't help? If the objectives where the case maybe showing the objectives at each level start.
2) Again here in which level you had trouble seeing the borders of tiles? In most levels only the movable tiles (with white border) and the blacks (the dark ones) are important, the rest of the level's tiles for gameplay purposes is background.