Useful Links:

1040.com (FREE 1040 EZ)
IRS.gov
Tax Book
Drake Software
EPS Financial
ERA.com 

Forms:

2012 Form W-4
Form W-9
Form 1040-ES
Form 1040
Form 941

Track Your Refund:
Where's My Refund?

IRS Small Business Resources:

Online Applications - Forms SS-4
Employer Identification Number
IRS Forms and Publications
Individual Withholding
IRS Withholding Calculator
Sales Tax Deducation Calculator
Alternative Minimun Tax (AMT)
Tax Information For Individuals


Financial Sites:

Exchange Rate
Wall Street Journal
Mortgage, Bank & Interest Rate
MSN Money