A. Yes, there are two websites that are free and offer tools for investors to check a stock's valuations by using the popular discounted cash flow method, and other methods as well.
Moneychimp.com
Moneychimp has an easy to follow value investing link which will take you step by step to find the value of a stock - you plug in the numbers you believe appropriate.
Valuewalk.com
Valuewalk has a collection of stock screeners which will enable you to run different stock value screen methods, including the Graham-Dodd screen method, Valuation stock screener, etc.