IRS Form 972 (Instructions for Applying for Child Tax Credit)
http://www.irs.gov/pub/irs-pdf/p972.pdf

IRS Phone Number
(800) 829-1040

Description
The Child Tax Credit is worth up to $1,000 per child. Tax filers need to earn more than $11,750 per year. Filers need a valid Individual Taxpayer Identification Number (ITIN), or Social Security Number to claim the credit. Eligibility requirements vary depending on the relationship, age, and term of residency apply to this credit; contact a free tax preparation site, or dial 2-1-1 to learn more.

Free Tax Perparation
Use the following tool to find free tax preperation services that can help you file your taxes and determine your eligability for the Child Tax Credit.