Understanding the Fundamentals
If you are interested in a certain company there are useful sites which give you some data about its financial fitness.
Reuters is probably the best for fundamental analysis. You have to register. It's free.
For companies which are not listed above, you can do the calculation yourself. Go to their SEC filing (10K, 10Q) and type in the numbers in the formular in this link.http://www.lib.washington.edu/business/ratios/ If you not to familiar with ratios there is a program which will do the job for you Financial Analysis & Business Plan Analysis Software
http://www.toolkit.cch.com/text/P06_7100.asp - Having difficulties understanding the numbers?
Warning signs in a financial statement - 5 points which should make you think.