Come join us and learn about Individual Taxpayer Identification Number (ITIN) application. This training series will cover information about how to apply or renewing application for the ITIN.   Who must apply or renew the ITIN.   Form W-7 and Instruction. What are the major errors. How to use TaxSlayer to apply for ITIN. Other training resources We will also have a quick Q&A at the end to answer any questions you might have for the upcoming season.  This is an elective course and recommended for experienced volunteers.