Update README.md

Reorganized for easy learning path.

README.md

@@ -21,17 +21,10 @@ Build skills in following categories
 ### Programming Languages 
 * [Java](https://www.scaler.com/topics/java/)
 
-
-## Business Processes
-*  [Universal Business Process Library](https://www.moqui.org/m/docs/mantle/Business+Process+Library)
-*  [Story of Online Retail Company](https://www.moqui.org/m/docs/mantle/Business%20Process%20Library/Story%20of%20Online%20Retail%20Company)
-
-
 ## Data Modeling
 *  [What is data modeling?](https://www.ibm.com/topics/data-modeling)
 *  Universal Data Model, First five chapters of the book: The Data Model Resource Book, Vol. 1
 *  [UDM](udm/readme.md)
-*  [UBPL](ubpl/readme.md)
 
 ### Early Traction
 1. https://github.com/saastechacademy/foundation/tree/main/moqui-framework/beginner
@@ -41,11 +34,16 @@ Build skills in following categories
 5. https://www.youtube.com/watch?v=mxToh2rX7NY
 
 
-## Official Documentation 
+## HotWax Commerce official documentation 
 1. https://docs.hotwax.co/documents/v/documents-1
 
 ## References:
 
+### Business Processes
+1. [Universal Business Process Library](https://www.moqui.org/m/docs/mantle/Business+Process+Library)
+2. [Story of Online Retail Company](https://www.moqui.org/m/docs/mantle/Business%20Process%20Library/Story%20of%20Online%20Retail%20Company)
+
+
 1. https://cwiki.apache.org/confluence/display/OFBIZ/Data+Model+Diagrams
 2. https://cwiki.apache.org/confluence/download/attachments/13271792/OFBizDatamodelBook_Combined_20171001.pdf
 3. https://www.amazon.com/Data-Model-Resource-Book-Vol/dp/0471380237