401k/IRA's 101

As you may see, each topic is followed with 101 indicating that this is a beginner's guide. As the first few posts accumulate, I want to make sure the basic information is covered. Every section has a different author, although I will continue to post from time to time. If you have any questions you would like answered, or if you have some tips or advice you would like to share, please email the section's author or just make a comment.