How do you blowdry thick, curly hair straight?

Ok so I have super thick, curly hair and its a pain to straighten it with a flat iron. I want to blowdry my hair straight but I end up looking like a VERY big poofy headed monster (not kidding! Lol) ok so after I shower, I wait a good 5 minutes, then I try combing threw my hair slowly and holding the blowdryer close to the brush, but it still gets so so so puffy. Straightening it after that is much much more work then straightening it naturally! My hair is so frustrating! Its course, dry, brittle, thick ,curly and basically everything else:( i want it naturually looking straight not puffy straight, I get jelous of the girls with naturally straight hair. Can anyone please tell me a how to, some tips, and some recommended products, or anything else that could help me. Please answer, and im sorry for the long message. Thank You:D