Well, if you want to, you can get on a skateboard to see how it feels if you haven't already done so.
Just about every kid has, a skateboard or two or three and someone will lend you one if you don't already have one. Just to try out at first of course.
Try it first on a somewhat gentle slope to get the feel of how it works under your feet.
Once you get a feeling for how to stop and how to turn you will get braver and become more adventurous tearing up the neighborhood with your skateboarding antics!
The young guy in the photo below is having a great time, and he has a helmet on to protect his head. You can start at most any age but better if you are under 75 or 80 years old as you can fall easily at first... and later. Don't want to break a hip now do you?
You have to get used to falling as you will always fall ... you will for sure when you are trying to advance in technique.