William Bernstein is sharing the basics of retirement planning in a free pamphlet. "If You Can," the pamphlet/ebook can be purchased digitally for .99 but can also be had for free.
One of the suggestions is to watch out for fees and to hold index funds (stocks, bonds, and international) in equal parts.
Seems like sound advice to me. The pamphlet is geared to younger people just starting out...
http://www.nytimes.com/2014/05/04/your-money/a-path-to-retirement-for-those-far-from-it.html?_r=0