How do I do it?

FIRST STEP

Join Freebiejeebies. Click the image below to go to the registration page.

Your gift will appear (iPhone 4 16 GB free), if you want you can change your gift, there are many.

Enter your email in the part where it says SIGN UP NOW, click inGo! and will appear in the form to fill your personal information so that you can send gifts, click on the box "I agree with the Terms & Conditions ", deselect the "I want to Receive the newsletter FreebieJeebies" not to receive newsletters weekly to your email, and click Continue and you're registered in Freebiejeebies

STEP TWO

The second step is to complete an offer. Go to the 'Offers', choose an offer, and fill it. It is best to complete the WorldWinner, is the fastest and can pay for a free paypal.There's a free way to completing an offer, you can also redeem 3 referred by an offer and so do not have any. Your three referrals must have completed an offer.

STEP THREE

Completed the offer, go to 'Refer Friends'y find your link for referrals. Now, the 16GB iPhone 4 needs 25 referrals, give to your friends, family, etc your link to register with him.

STEP FOUR

Once you have completed your offer and referral requirements asks for your iPhone 4 and in a few days you'll have it at home for free! 

To answer your questions, and to see more details,  I recommend visiting the Help section