Only in doubles. If you're playing doubles then you serve from the right, crosscourt. If it's just singles then you can serve anywhere.
In singles play, you can serve from anywhere as long as the ball is behind the end line and above the table. In doubles play, you must serve from the right half of the table.
There is no rule specified saying you can not serve while sitting. Ping Pong is played by people who stand by choice and by people who permanently sit.
You can win a point with a serve. The game goes to 11 points changing serve every 2 points.
When you serve, you start the volley back and forth until somebody wins the point.
Yes you can get the winning point on a serve according to all the rules that I have read.
there are no foul lines for singles in table tennis, but for doubles you are only allowed to serve from the right half of your side of the table to the opponents right half (cross court/table).
yes you get two serves in table tennis and tennis
You cannot spin the ball when you throw it up while serving. You can create spin from your racket on the serve though.