1. Generally speaking, the cycle begins with a boom period when the economy flourishes and many businesses enjoy great success.Then the economy gradually losses its stream and reached the peaks of the cycle. Later on, there is a recession. Many company stop making money and lots of workers lose their jobs due to layoffs. The last stage of the cycle is recovery. which begins as the economy hits  the bottom

2. The terrible economic crisis in 1929 began with a terrible stock market crash.

stock market crash 股市崩盘

3. The educational sector will not suffer a great negative impact. The entertainment industry will be relatively safe as well. 

4. It is highly recommended that you break out of your comfort zone and acquire new job skills.