Right
The right side
when it's your serve, you serve from the left if your score is odd and from the right if even. So it will start on the right and the first person to get the first point will then serve on the left because they have got one.
right
a serve is were you use a variety of techniques to get the shuttle to the other side.
The server switches boxes on his or her side of the court, only after they score during their serve, after a game is complete and when one side reaches 8 points in a third game.
You need to start on the right side of the badminton court because in your first serve, you are serving evens. (0) For evens (0,2,4,6,8) you stand on the right side of the court to serve and for odds (1,3,5,7,9) you stand on the left side of the court to serve.
In the absence of a referee or score keepers on the side, typically the person serving the ball would call out the score before they serve.
An "ace" happens on a serve where you hit the birdie to the opponents side and they miss. This is an "ace".
To make the match fair. If one player had the side with no sun they would have the predominate advantage.
If it is an even number, (which, in the beginning, it will be,) you serve from the right. If it is an odd number, you serve from the left. The same person keeps serving until they break their rally.
The Server
Yes, side arm serves are legal in badminton, as long as the serve adheres to the rules set by the Badminton World Federation (BWF). The shuttlecock must be hit below the waist, and the server must strike it with the racket facing downwards. Additionally, the server's feet must remain within the designated service area during the serve. However, the serve should not be deceptive or involve any illegal actions that could hinder fair play.