Step 1) Wire up your servo like this picture.
*The brown/black wire goes to GND, the red wire goes to 5V and the last wire goes to pin 9.
(Note, the last wire could be several different colors)
You can actually plug your servo's orange cord to any pin, just make sure to type that pin number in myservo.attach(#) where # is what you plugged in. Notice the example picture is plugged into 9?
Here is the picture of what yours looks like. They can be in your kit bag or the black box in the kit.
Turning it changes the value it gives and we can tell the computer how to use this data.
Someday you may want to wire up many of these, so we should make an easy to change variables to set what where servos are plugged into the board.
Watch this video if you need help building your robot hand.
Here are links to the two different robot hands you may have gotten for camp.
Green Hand: https://www.amazon.com/4M-3774-Robotic-Hand-Kit/dp/B005MK0OPO/ref=sr_1_2?dchild=1&keywords=robotic+hand&qid=1591194220&sr=8-2
Purple hand: https://www.amazon.com/Tara-Toys-STEM-Projects-Robotic/dp/B07GRGLB8N/ref=sr_1_15?dchild=1&keywords=robot+hand&qid=1592926434&sr=8-15