The first thing to do is follow this link
http://www.freeipoduk.co.uk/index.php?REFID=78306Sign up by putting in your email and assigning yourself a password.
When prompted enter your shipping details and continue through to the offers page.
You now have to complete 2 offers and i recommend doing the Ebay & Timelife or Channel offers.Ebay is free & does'nt require a credit card & Timelife and Channel only cost £2.99(with Timelife you pay £2.99 delivery on a free CD and with Channel you get The Incredibles DVD for £2.99).
You should usually recieve credit for completion of any offers within a few days, although this could take longer depending on which offers were completed.
Now you need to get 5 people to sign up under you(send out your referral link to friends, post it on websites and in forums).
When you have 5 referrals who have completed an offer you can make your claim for your free iPod mini & wait for it to be delivered.