This is a guide on how to get to the agility course, and what to do there(It's pretty obvious what to do.)
First from home go southeast until you get here:
Then Click talk to professor oddenstien, then you will be automatically teleported here:
Then after that click Squeeze through tunnel:
Then once you are inside follow the course
Note: Do not mass click on the agility object's as it will cause you to become glitched.