Can't figure out the right formula for data sharing between worksheets

Hi.

I'm by no means an Excel expert. I've been working on this for 2 days, searching google and trying everything. What I have is a workbook with 2 sheets. I'd like to find a way to import data from the 2nd sheet to the first sheet where the info in one column matches on both sheets. It seems easy enough, but I can't make it work.

What I'm trying to do is fill in the SKU, Cost, & Retail columns from sheet 2 into sheet 1 where the Style column matches on both sheets.

I've attached the file here. My actual file is about 30,000 items but I've only attached around 50 or 100 so i can get the idea how to do this.

HELP for this NOOB please!

Thanks!