Scarf - (old) Forever 21 maybe?
Shirt - Forever 21
Belt - Goodwill ($2)
Cardigan - JC Penney (clearance for $5!)
Jeans - Levi's Curve ID (bold)
Boots - Ross
I found this really cool video on how to tie a scarf. If you have a YouTube account, I strongly suggest you follow Wendy's Lookbook. She's very informative on fashion and style.