If you still want to increase your SkyDrive storage then get an email address from your school, college or university because SkyDrive is giving additional 3 GB storage for free and this offer is only for U.S. students. If you are a U.S. student and have email address (firstname.lastname@example.org) then visit SkyDrive for students and give them your email. They’ll send you your free storage code on that email. After getting your code for additional 3 GB storage visit SkyDrive and look for manage storage toward bottom left corner and click on it. (Read Also: Free 15 GB additional Storage by SkyDrive for iCloud Users)
Now on manage storage page you’ll see redeem SkyDrive code, click on it and paste your free storage code here that you got in email and click on redeem to get 3 GB additional storage space.