My parents are 57 and 60 years old. My mom has some money in a retirement plan that she started seven years ago and can also count on a modest pension. My dad, however, had his own business for a long time and put everything back into it. For the past 5 years he has been part time consulting etc. but not making anywhere near what he used to. All he has is a bank IRA he started a few years ago.

What advice should I give them to help them secure a better retirement and not have to work until they are 90? My dad would be especially interested in any books or other resources anyone could suggest for folks who didn't plan ahead.

Thanks in advance!