Office 365 allows you to collaborate on projects with other users in the cloud and comes with Microsoft Word, Excel, Powerpoint, Outlook, OneNote, Access and Publisher.
Now, you can get 3 months free with this link and another 3 months free when you share the offer on Facebook
Office 365 normally comes with 7GB of storage on Skydrive. With this offer, you will get another 20GB of storage for free. After the 6 months your storage limit will go back down to 7GB and you won't be able to add anything until you pay the regular fee or remove files to get under the 7GB limit.
Thank you YP for the tip!