What are the Prerequisites to Learn QlikView step by step?
The basic pre-requisites for Qlikview will be similar to what is required for other BI tools: ** Any programming Language syntax including...

https://www.interviewquestionspdf.com/2015/02/what-are-prerequisites-to-learn.html
The basic pre-requisites for Qlikview will be similar to what is required for other BI tools:
** Any programming Language syntax including
>> Functions
>> Loops
>> Date conversion etc
** Database Knowledge
This includes:
>> TSQL
>> Data Modelling
>> Data Warehousing
>> ETL etc
** Visualization Knowledge
>> UI designing
>> Chart and other Objects usage and requirement etc
** For Advance users
>> VB Script
>> Macro Knowledge
>> Extension Objects etc
Then further things get bifurcated into QV Developer or QV Administrator.
Hope this was helpful or correct as per request.
** Any programming Language syntax including
>> Functions
>> Loops
>> Date conversion etc
** Database Knowledge
This includes:
>> TSQL
>> Data Modelling
>> Data Warehousing
>> ETL etc
** Visualization Knowledge
>> UI designing
>> Chart and other Objects usage and requirement etc
** For Advance users
>> VB Script
>> Macro Knowledge
>> Extension Objects etc
Then further things get bifurcated into QV Developer or QV Administrator.