what do you konw about the social security system in USA?

As far as I known,there are some social security types, maybe can help you.
1. Retired

Male 65 years old, female 62 year old of retirement then each month of payment living expenses, guarantee old after life. But each month of actual payment acts according to social fund how many which its myself passes pays to decide.

2. Disabled welfare fund

When the four limbs break off in the work, lose one's sight or above other disease 1 years cannot work, the government to myself and its the spouse, the children (not reach 18 year-old, university is reading children not reach 22 year-old) to pay the living expenses the system. The payment limit pays social with the retired safeguard according to the reality the situation to decide equally.

3. Surviving family of deceased

11,000 heads of household died, the government to its spouse, the children (not reach 18 year-old, university is reading children not reach 22 year-old) to p