Skateboarding has two stances: The Goofy stance and the Regular stance.
To find out which stance is comfortable for you, try some of these tips.
First of all, the goofy stance is where you place your right foot in the front. Regular stance is where you place your left foot forward and right foot at the back. Try some of these tips in order to know which stance you will be most comfortable with.

Whichever foot you are comfortable kicking it with will likely be your back foot. You have to remember that the balancing foot should be on front and the kicking foot should be at the back of the board.
Next, go upstairs and observe which foot you use on your first step. Whichever foot you use will be your back foot on the skateboard. This means that if you use your right foot to go up the stairs first, you will likely be comfortable using the regular stance.
For those right handed people, most skateboarders use the regular stance. This is why regular stance is called regular as it is used by most skateboarders.
Try skateboarding using both stances. Whether it is regular or goofy stance, you will see that skateboarding is for fun to do.
Remember these stances and you should be able to know which stance you will like to use. Although it is not necessary that you should go and use regular stance if you kicked the ball with your right foot, it just basically means that it is a good way to find out what kind of stance you will most likely be comfortable with.
Whichever stance you use, always prior your safety. Always use safety gear and you will have a fun from skateboarding.