How can I get the loose curls look?

I have very straight hair and I'm awful at doing anything with my hair. Basically I can put it in a ponytail or a bun. I love the loose curls look but I have no idea how to go about doing it. Any tips??

Here are the steps ( which I got from a magazie):
1. Wash and condition with a curl-enhancing LIGHT WEIGHT formula
*Tip: Only shampoo your roots to avoid drying out the rest of your hair and only condition your ends, because if you condition your roots, it'll weight your hair down and make it harder to hold curls
2. Apply your styling product of choice ( preferably, a volumizing mousse). Be sure to not use too much, because that will weight your hair down and reduce shine.
3. Divide hair from front to back by parting ( lengthwise). Seperate each side into 3 equal sections. Twist each section and clip out of the way.
4. Wrap and round brush under a section of hair as close to scalp as possible. Aim the nozzle of a blow-dry down the hair shaft and use it to follow the brush as you extend it from the roots to the ends of your hair. Repeat until each section is fully dry.
5. After each section is dry, wrap the hair around 2 inch-velcro rollers. Secure each roller with bobby pins.
6. Once all hair is dry and set in rollers, mist it lightly with hairspray with a long-lasting hold. Allow hair to dry a few aditional minutes.
7. Gently remove bobby pins and rollers. Using your fingers, carefully comb the hair to blend the sections together. Apply a dab of finishing balm to the tips of your fingers and run them lightly through hair for shine and hold.
VOILA!
This is a long process to go through on a day-to-day basis, so it's best you save this for special occassions and reconcile your natural hair type. Hope that helped, peace!
P.S. Or you could try seperating it into two sections, spraying it with hairspray and pulling those sections into 2 buns, then sleeping like that and taking them out when you wake up.