A flip is a gymnastic move, so you would want to find gymnastic teacher to show you how to roll and flip around. All martial arts teach throws at some level or another. Striking arts teach grappling techniques and grappling arts teach striking techniques.
Flip? You mean throw people? Karate includes grappling and throws in its arsenal of techniques.
Never
There are no educational requirements to teach karate.
Karate was based on a combination of kung fu and Okinawan wrestling. They are very similar in most of the basic techniques and principles. Karate tends to be a bit more direct and stresses power.
I don't know if that's possible, since they don't naturally flip anyway. You can teach them to roll over. You can probably teach them to jump through a hoop
You have to know what you are going to teach. There are no education requirements. Your particular organization may require specific criteria be met before you are authorized to teach.
Japanese karate was a branch of Okinawa karate. Gichen Funikoshi came to Japan in the 1930's to demonstrate the art. He remained for the rest of his life to teach what is now known as Shodokan Karate.
Karate does not use weapons. Many karate schools also teach kobudo, which is the use of weapons, and have failed to keep the distinction between the two arts.
Students may be taught karate individually or in groups by karate teachers. They teach pupils new skills and help them hone their existing ones. Teachers keep track of their pupils' development and help them get ready for promotion.
Shotokan Karate of America was founded in the year 1959. It is a non-profit organization that aims to teach traditional Karate-Do in the USA. It is led by Tsutomu Ohshima.
It depends on the dojo. Most dojo teach for 1-2 hours daily. Some teach karate on alternate days. Some may even practice once or twice a week.