Well i found out how to get the offer, but when i click the link it just takes me to a page with no relevant information, if somebody can get the link to subscribe to the 1 month trial offer please post it here!
Remember that you are signing for a Skype Unlimited Plan if you sign-in for Free Unlimited min to landlines 1 month.
Make sure to cancel before the first month ends or you will be charge around $14 a month.