I have always done my taxes myself, and never had to look for information. The tax preparation software has all the answers. For $20 (for both Federal and State, after rebates),
TaxCut will ask you all the relevant questions, determine which forms you need to fill, and actually fill them out based on the "interview" with you.
If the tax laws were simple and static, I guess there would be some sense in studying them and manually doing the tax returns every year. But with 50 volumes of IRS code that is constantly changing, $20 gives you a good return on investment.