Hi Ajit:
The SAP Learning Hub has self-paced eLearning versions for most of our classes. You can identify them by the "e" in the name, for example AR510e is the e-Learning version of AR510.
You can also sign-up for Ariba Connect to access documentation. Here's the link for new user registration: https://connect.ariba.com/SRWebService/UserRegistration.aspx
Debbie