If you are using QlikView for personal learning, you do not need a license key. The Personal Edition is a full-featured version that runs without a key. License Type (CALs):
Licensing can be applied to both Desktop and Server environments: QlikView Desktop: Users can activate a license by navigating to Settings > User Preferences > License Qlikview 11 license key
A text file generated during activation (using an internet connection) that defines the entitlements, such as the number of CALs, expiration date, and enabled features (e.g., Publisher). Offline Activation: If you are using QlikView for personal learning,
: Assigned to a specific user or machine; allows unlimited access to all documents on the server. such as the number of CALs
Understanding QlikView 11 License Keys: A Comprehensive Guide