You know that hairstyle where the back of your hair, right at the top of your head is BOOSTED with volume... I LOVE THAT, but how do I do it? I tried hairspray and it just makes it sticky.. I have no idea how to do it, and I can't look it up because I have no idea what the style is called lol. Thanks

Use a volumising mousse when the hair is damp. Blow dry your hair with a big round brush. Then once your hair is dry, you can use straighteners but don't straighten the roots.
After that, you can apply wax on the roots and lift your hair up. Or you can back comb on the roots. Then spray hairspray over it to fix the style.