Buy a good round brush! I love the Olivia Garden Ceramic ionic brushes, they will run you about $30 but will last
Product is key I like to use mousse for blow outs and then end with a softening oil
Power Dry your hair until it is about 90% dry (this is the most important tip because otherwise your arms will feel like they are going to fall off before you’re halfway done)
Section the hair into at least 3 sections taking one inch subsections down to dry (if you do too much hair at once you won’t get the same amount of volume)
Elevate the brush 180% for the most volume
Happy Blow Drying!!