Offer your thoughts or opinion on the input financial query or topic using your financial background.

How to evaluate stocks? e.g. Whether some stock is cheap or expensive?
Its like anything else, you need to study and learn more about investing in general and the stocks you are looking at buying or selling. Magazines are a good start -- also check out the books recommended in another question. If you're looking at buying a stock for the mid/long term, look at things like this: Selling is more complicated and more frequently screwed up: