All your Problems will be settled here, so read this post till the end, and get the official portal links easily.
o Enter your PTC username (your email address) and password. o Click Login. When you see the “Success!” message, click Next. In the application list, deselect all the applications you do not need, and then click Install. After the installation is complete, click Finish. You are now ready to use PTC Creo 5.0 - Student Edition