I have always wanted to be a journalist, which is a person who writes news or other current information to the public.
What is their major function?
Journalists work with general issues or in specific issues. They inform the public about events the public would not know about.
That means they are source of the news we listen to 
Correct. A journalist's work is usually called journalism. It can be written or spoken form.
What more do you know about a journalist?
Journalist
A journalist is a person who collects, writes, or distributes news or other current information to the public. A journalist's work is called journalism. A journalist can work with general issues or specialize in certain issues. However, most journalists tend to specialize, and by cooperating with other journalists, produce journals that span many topics. For example, a sports journalist covers news within the world of sports, but this journalist may be a part of a newspaper that covers many different topics.
Roles.
a public figure, such as a local sports star?
- Freelance journalists and photographers accept cash to write about, or take photos of, events with the promise of attempting to get their work on the AP or other news outlets, from which they also will be paid. Is that ethical?
- Can a journalist reveal a source of information after guaranteeing confidentiality if the source proves to be unreliable?
Criticisms.
Jesse Owen Hearns-Branaman of the National Institute of Development Administration, Thailand, argued that