
The Social Security Administration's site explains how to apply for benefits and helps you calculate how much you're likely to receive based on whether you start collecting as early as age 62, as late as age 70, or somewhere in between.
Head here for information on taxes, including the rules on IRA contributions and withdrawals.
The Pension Benefit Guaranty Corporation (PBGC) insures many traditional, defined-benefit plan pensions, up to certain limits. Its Web site provides general information on the topic, plus specifics on pension plans that have been terminated by employers and taken over by the agency. The PBGC does not cover defined-contribution plans, such as 401(k)s.
This is the place for information on buying Treasury securities, a longtime retiree favorite.
The Medicare Rights Center is a nonprofit advocacy organization, and this site answers many, if not all, of the questions you might have about health coverage after age 65.
Thinking of going back to work in retirement? This site has job leads and general advice.
Elderhostel is the granddaddy (and grandmommy) of organizations sponsoring educational travel experiences for retirees and other older adults.