To be able to code more than the most basic WLST scripts for WebLogic you should have reasonably good Python skills. Fortunately there are many good and free resources to get started. Note that WLST as of WLS 12.1.2 is using Python 2.
Here is a list of recommendations to learn more Python and become better a WLST:
For regular information become a member in the WebLogic Partner Community please visit: http://www.oracle.com/partners/goto/wls-emea ( OPN account required). If you need support with your account please contact the Oracle Partner Business Center.