Social Security is the bedrock of retirement income security so it is absolutely essential that you understand how the system works in order to maximize your financial security in later life. For younger readers, consider educating yourself so that you can ensure that your parents are making wise decisions so they don't depend on you to support them. One of the best websites that clearly explains options is "The Social Security Guide" written by SS expert extraordinaire Laurence J. Kotlikoff. https://www.moneygeek.com/retirement/resources/social-security-guide/
Get the most from the benefits you've earned. Don't jump to file for benefits as soon as you are eligible unless you are desperate or expect to die young.
Consider buying Kotlikoff's book: Get what's yours: The secrets to maxing out your Social Security. Available as paper or ebook: http://www.simonandschuster.com/books/Get-Whats-Yours/Laurence-J-Kotlikoff/The-Get-Whats-Yours-Series/9781476772318