Why do i have to wait and watch videos

The reason being is because of your search history. Google will remember everything you like to watch, look, play or buy things on the computer or any device with internet. Since you are interested in the things you like to do, you're computer will remember this and will display Ads made by companies, or people, which possibly may be a scam, or may give a virus. I would advise to avoid these things as much as you can.

something will pop up that says “know the answer? answer now! ” and you click on it and write your answer. after you are done, submit it.

the answer is you.