That circle with the two little eyeballs is you. The eyeballs show which direction you’re facing. What you have to do is make a series of moves that will get you onto the hexagon marked GOAL. To indicate a move, click on the hexagon you are moving to.
You can move for any distance along a row of hexagons, but you can only end your move on a hexagon that has either the same symbol or the same color as the hexagon at the start of your move (moving to both the same symbol and the same color is also okay). The maze has a no-U-turn rule: you cannot move directly backwards. That leaves five other possible directions for your move.
If any of this is confusing, don’t worry. The program will nag you with helpful error messages to explain what you’re doing wrong.